diff --git a/src/SupabaseClient.ts b/src/SupabaseClient.ts
index 13a64e731..83e307a40 100644
--- a/src/SupabaseClient.ts
+++ b/src/SupabaseClient.ts
@@ -1,4 +1,5 @@
 import { DEFAULT_HEADERS } from './lib/constants'
+import { stripTrailingSlash } from './lib/helpers'
 import { SupabaseClientOptions } from './lib/types'
 import { SupabaseAuthClient } from './lib/SupabaseAuthClient'
 import { SupabaseQueryBuilder } from './lib/SupabaseQueryBuilder'
@@ -51,6 +52,8 @@ export default class SupabaseClient {
     if (!supabaseUrl) throw new Error('supabaseUrl is required.')
     if (!supabaseKey) throw new Error('supabaseKey is required.')
 
+    supabaseUrl = stripTrailingSlash(supabaseUrl)
+
     const settings = { ...DEFAULT_OPTIONS, ...options }
     this.restUrl = `${supabaseUrl}/rest/v1`
     this.realtimeUrl = `${supabaseUrl}/realtime/v1`.replace('http', 'ws')
diff --git a/src/lib/helpers.ts b/src/lib/helpers.ts
index 686282e0e..0d9a073d5 100644
--- a/src/lib/helpers.ts
+++ b/src/lib/helpers.ts
@@ -7,3 +7,7 @@ export function uuid() {
     return v.toString(16)
   })
 }
+
+export function stripTrailingSlash(url: string) {
+  return url.replace(/\/$/, "");
+}