diff --git a/packages/core/src/lib/actions/callback/oauth/checks.ts b/packages/core/src/lib/actions/callback/oauth/checks.ts
index 9269ab1224..e10a1542c4 100644
--- a/packages/core/src/lib/actions/callback/oauth/checks.ts
+++ b/packages/core/src/lib/actions/callback/oauth/checks.ts
@@ -74,7 +74,7 @@ export const pkce = {
     const codeVerifier = cookies?.[options.cookies.pkceCodeVerifier.name]
 
     if (!codeVerifier)
-      throw new InvalidCheck("PKCE code_verifier cookie was missing.")
+      throw new InvalidCheck("PKCE code_verifier cookie was missing")
 
     const value = await decode<CheckPayload>({
       ...options.jwt,
@@ -83,7 +83,7 @@ export const pkce = {
     })
 
     if (!value?.value)
-      throw new InvalidCheck("PKCE code_verifier value could not be parsed.")
+      throw new InvalidCheck("PKCE code_verifier value could not be parsed")
 
     // Clear the pkce code verifier cookie after use
     resCookies.push({
@@ -117,7 +117,7 @@ export const state = {
     if (!provider.checks.includes("state")) {
       if (data) {
         throw new InvalidCheck(
-          "State data was provided but the provider is not configured to use state."
+          "State data was provided but the provider is not configured to use state"
         )
       }
       return
@@ -155,7 +155,7 @@ export const state = {
 
     const state = cookies?.[options.cookies.state.name]
 
-    if (!state) throw new InvalidCheck("State cookie was missing.")
+    if (!state) throw new InvalidCheck("State cookie was missing")
 
     // IDEA: Let the user do something with the returned state
     const encodedState = await decode<CheckPayload>({
@@ -165,12 +165,12 @@ export const state = {
     })
 
     if (!encodedState?.value)
-      throw new InvalidCheck("State (cookie) value could not be parsed.")
+      throw new InvalidCheck("State (cookie) value could not be parsed")
 
     const decodedState = decodeState(encodedState.value)
 
     if (!decodedState)
-      throw new InvalidCheck("State (encoded) value could not be parsed.")
+      throw new InvalidCheck("State (encoded) value could not be parsed")
 
     if (decodedState.random !== paramRandom)
       throw new InvalidCheck(
@@ -214,7 +214,7 @@ export const nonce = {
     if (!provider?.checks?.includes("nonce")) return
 
     const nonce = cookies?.[options.cookies.nonce.name]
-    if (!nonce) throw new InvalidCheck("Nonce cookie was missing.")
+    if (!nonce) throw new InvalidCheck("Nonce cookie was missing")
 
     const value = await decode<CheckPayload>({
       ...options.jwt,
@@ -222,8 +222,7 @@ export const nonce = {
       salt: options.cookies.nonce.name,
     })
 
-    if (!value?.value)
-      throw new InvalidCheck("Nonce value could not be parsed.")
+    if (!value?.value) throw new InvalidCheck("Nonce value could not be parsed")
 
     // Clear the nonce cookie after use
     resCookies.push({
@@ -294,7 +293,7 @@ export const webauthnChallenge = {
   ): Promise<WebAuthnChallengeCookie> {
     const challenge = cookies?.[options.cookies.webauthnChallenge.name]
 
-    if (!challenge) throw new InvalidCheck("Challenge cookie missing.")
+    if (!challenge) throw new InvalidCheck("Challenge cookie missing")
 
     const value = await decode<CheckPayload>({
       ...options.jwt,
@@ -303,7 +302,7 @@ export const webauthnChallenge = {
     })
 
     if (!value?.value)
-      throw new InvalidCheck("Challenge value could not be parsed.")
+      throw new InvalidCheck("Challenge value could not be parsed")
 
     // Clear the pkce code verifier cookie after use
     const cookie = {
diff --git a/packages/core/src/lib/utils/assert.ts b/packages/core/src/lib/utils/assert.ts
index d4ae83be35..919741a144 100644
--- a/packages/core/src/lib/utils/assert.ts
+++ b/packages/core/src/lib/utils/assert.ts
@@ -98,7 +98,7 @@ export function assertConfig(
   }
 
   if (!options.secret?.length) {
-    return new MissingSecret("Please define a `secret`.")
+    return new MissingSecret("Please define a `secret`")
   }
 
   const callbackUrlParam = request.query?.callbackUrl as string | undefined
@@ -141,7 +141,7 @@ export function assertConfig(
 
       if (key) {
         return new InvalidEndpoints(
-          `Provider "${provider.id}" is missing both \`issuer\` and \`${key}\` endpoint config. At least one of them is required.`
+          `Provider "${provider.id}" is missing both \`issuer\` and \`${key}\` endpoint config. At least one of them is required`
         )
       }
     }
@@ -165,7 +165,7 @@ export function assertConfig(
         // Make sure only one webauthn provider has "enableConditionalUI" set to true
         if (hasConditionalUIProvider) {
           return new DuplicateConditionalUI(
-            `Multiple webauthn providers have 'enableConditionalUI' set to True. Only one provider can have this option enabled at a time.`
+            `Multiple webauthn providers have 'enableConditionalUI' set to True. Only one provider can have this option enabled at a time`
           )
         }
         hasConditionalUIProvider = true
@@ -177,7 +177,7 @@ export function assertConfig(
         )
         if (!hasWebauthnFormField) {
           return new MissingWebAuthnAutocomplete(
-            `Provider "${provider.id}" has 'enableConditionalUI' set to True, but none of its formFields have 'webauthn' in their autocomplete param.`
+            `Provider "${provider.id}" has 'enableConditionalUI' set to True, but none of its formFields have 'webauthn' in their autocomplete param`
           )
         }
       }
@@ -216,12 +216,11 @@ export function assertConfig(
     (!session?.strategy && adapter)
   ) {
     if (hasEmail) {
-      if (!adapter)
-        return new MissingAdapter("Email login requires an adapter.")
+      if (!adapter) return new MissingAdapter("Email login requires an adapter")
       requiredMethods.push(...emailMethods)
     } else {
       if (!adapter)
-        return new MissingAdapter("Database session requires an adapter.")
+        return new MissingAdapter("Database session requires an adapter")
       requiredMethods.push(...sessionMethods)
     }
   }
@@ -232,11 +231,11 @@ export function assertConfig(
       warnings.push("experimental-webauthn")
     } else {
       return new ExperimentalFeatureNotEnabled(
-        "WebAuthn is an experimental feature. To enable it, set `experimental.enableWebAuthn` to `true` in your config."
+        "WebAuthn is an experimental feature. To enable it, set `experimental.enableWebAuthn` to `true` in your config"
       )
     }
 
-    if (!adapter) return new MissingAdapter("WebAuthn requires an adapter.")
+    if (!adapter) return new MissingAdapter("WebAuthn requires an adapter")
     requiredMethods.push(...webauthnMethods)
   }
 
diff --git a/packages/core/src/lib/utils/web.ts b/packages/core/src/lib/utils/web.ts
index 42fd2b7168..41e341d7de 100644
--- a/packages/core/src/lib/utils/web.ts
+++ b/packages/core/src/lib/utils/web.ts
@@ -28,7 +28,7 @@ export async function toInternalRequest(
 ): Promise<RequestInternal | undefined> {
   try {
     if (req.method !== "GET" && req.method !== "POST")
-      throw new UnknownAction("Only GET and POST requests are supported.")
+      throw new UnknownAction("Only GET and POST requests are supported")
 
     // Defaults are usually set in the `init` function, but this is needed below
     config.basePath ??= "/auth"
diff --git a/packages/core/src/lib/utils/webauthn-utils.ts b/packages/core/src/lib/utils/webauthn-utils.ts
index eaa3b0febb..6a1a601d03 100644
--- a/packages/core/src/lib/utils/webauthn-utils.ts
+++ b/packages/core/src/lib/utils/webauthn-utils.ts
@@ -262,7 +262,7 @@ export async function verifyAuthenticate(
   // Make sure the response was verified
   if (!verified) {
     throw new WebAuthnVerificationError(
-      "WebAuthn authentication response could not be verified."
+      "WebAuthn authentication response could not be verified"
     )
   }
 
diff --git a/packages/core/src/providers/webauthn.ts b/packages/core/src/providers/webauthn.ts
index f0e66f6b4a..2cbc56bd38 100644
--- a/packages/core/src/providers/webauthn.ts
+++ b/packages/core/src/providers/webauthn.ts
@@ -241,7 +241,7 @@ const getUserInfo: GetUserInfo = async (options, request) => {
   const { adapter } = options
   if (!adapter)
     throw new MissingAdapter(
-      "WebAuthn provider requires a database adapter to be configured."
+      "WebAuthn provider requires a database adapter to be configured"
     )
 
   // Get email address from the query.
diff --git a/packages/core/test/assert-config.test.ts b/packages/core/test/assert-config.test.ts
index b1f338f6ce..3667db2709 100644
--- a/packages/core/test/assert-config.test.ts
+++ b/packages/core/test/assert-config.test.ts
@@ -29,7 +29,7 @@ describe("Assert user config correctness", () => {
         "There was a problem with the server configuration. Check the server logs for more information.",
     })
     expect(logger?.error).toHaveBeenCalledWith(
-      new MissingSecret("Please define a `secret`.")
+      new MissingSecret("Please define a `secret`")
     )
   })
 
@@ -92,11 +92,11 @@ describe("Assert user config correctness", () => {
     it.each<[Provider, string]>([
       [
         () => ({ type: "oidc", id: "provider-id", name: "" }),
-        'Provider "provider-id" is missing both `issuer` and `authorization` endpoint config. At least one of them is required.',
+        'Provider "provider-id" is missing both `issuer` and `authorization` endpoint config. At least one of them is required',
       ],
       [
         { type: "oidc", id: "provider-id", name: "" },
-        'Provider "provider-id" is missing both `issuer` and `authorization` endpoint config. At least one of them is required.',
+        'Provider "provider-id" is missing both `issuer` and `authorization` endpoint config. At least one of them is required',
       ],
       [
         {
@@ -105,7 +105,7 @@ describe("Assert user config correctness", () => {
           id: "provider-id",
           name: "",
         },
-        'Provider "provider-id" is missing both `issuer` and `token` endpoint config. At least one of them is required.',
+        'Provider "provider-id" is missing both `issuer` and `token` endpoint config. At least one of them is required',
       ],
       [
         {
@@ -115,7 +115,7 @@ describe("Assert user config correctness", () => {
           id: "provider-id",
           name: "",
         },
-        'Provider "provider-id" is missing both `issuer` and `userinfo` endpoint config. At least one of them is required.',
+        'Provider "provider-id" is missing both `issuer` and `userinfo` endpoint config. At least one of them is required',
       ],
       [
         {
@@ -127,7 +127,7 @@ describe("Assert user config correctness", () => {
           id: "oauth-provider",
           name: "",
         },
-        'Provider "oauth-provider" is missing both `issuer` and `userinfo` endpoint config. At least one of them is required.',
+        'Provider "oauth-provider" is missing both `issuer` and `userinfo` endpoint config. At least one of them is required',
       ],
     ])("OAuth/OIDC: invalid endpoints %j", async (provider, error) => {
       const { response, logger } = await makeAuthRequest({