diff --git a/.changeset/khaki-olives-add.md b/.changeset/khaki-olives-add.md
new file mode 100644
index 000000000..6bf38cd8f
--- /dev/null
+++ b/.changeset/khaki-olives-add.md
@@ -0,0 +1,5 @@
+---
+"@callstack/repack": patch
+---
+
+Don't error on missing `--entry-file` when entry is defined in `rspack.config.js` or `webpack.config.js`.
diff --git a/packages/repack/src/commands/common/getEnvOptions.ts b/packages/repack/src/commands/common/getEnvOptions.ts
index 3f4e330b0..17c8aef45 100644
--- a/packages/repack/src/commands/common/getEnvOptions.ts
+++ b/packages/repack/src/commands/common/getEnvOptions.ts
@@ -16,10 +16,12 @@ export function getEnvOptions(cliOptions: CliOptions): EnvOptions {
       cliOptions.arguments.bundle.minify ?? env.mode === 'production';
 
     const { entryFile } = cliOptions.arguments.bundle;
-    env.entry =
-      path.isAbsolute(entryFile) || entryFile.startsWith('./')
-        ? entryFile
-        : `./${entryFile}`;
+    if (entryFile) {
+      env.entry =
+        path.isAbsolute(entryFile) || entryFile.startsWith('./')
+          ? entryFile
+          : `./${entryFile}`;
+    }
 
     env.bundleFilename = cliOptions.arguments.bundle.bundleOutput;
     env.sourceMapFilename = cliOptions.arguments.bundle.sourcemapOutput;
diff --git a/packages/repack/src/commands/rspack/bundle.ts b/packages/repack/src/commands/rspack/bundle.ts
index 4a93b84b1..6d3a0d3b4 100644
--- a/packages/repack/src/commands/rspack/bundle.ts
+++ b/packages/repack/src/commands/rspack/bundle.ts
@@ -44,10 +44,6 @@ export async function bundle(
     arguments: { bundle: args },
   };
 
-  if (!args.entryFile) {
-    throw new Error("Option '--entry-file <path>' argument is missing");
-  }
-
   if (args.verbose) {
     process.env[VERBOSE_ENV_KEY] = '1';
   }
@@ -55,6 +51,10 @@ export async function bundle(
   const envOptions = getEnvOptions(cliOptions);
   const config = await loadConfig<Configuration>(rspackConfigPath, envOptions);
 
+  if (!args.entryFile && !config.entry) {
+    throw new Error("Option '--entry-file <path>' argument is missing");
+  }
+
   const errorHandler = async (error: Error | null, stats?: Stats) => {
     if (error) {
       console.error(error);
diff --git a/packages/repack/src/commands/webpack/bundle.ts b/packages/repack/src/commands/webpack/bundle.ts
index ca8884492..7e10830e9 100644
--- a/packages/repack/src/commands/webpack/bundle.ts
+++ b/packages/repack/src/commands/webpack/bundle.ts
@@ -43,10 +43,6 @@ export async function bundle(
     arguments: { bundle: args },
   };
 
-  if (!args.entryFile) {
-    throw new Error("Option '--entry-file <path>' argument is missing");
-  }
-
   if (args.verbose) {
     process.env[VERBOSE_ENV_KEY] = '1';
   }
@@ -57,6 +53,10 @@ export async function bundle(
     envOptions
   );
 
+  if (!args.entryFile && !webpackConfig.entry) {
+    throw new Error("Option '--entry-file <path>' argument is missing");
+  }
+
   const errorHandler = async (error: Error | null, stats?: webpack.Stats) => {
     if (error) {
       console.error(error);