diff --git a/packages/functions_client/lib/src/types.dart b/packages/functions_client/lib/src/types.dart
index 1ee42033..033a4c5a 100644
--- a/packages/functions_client/lib/src/types.dart
+++ b/packages/functions_client/lib/src/types.dart
@@ -32,7 +32,7 @@ class FunctionException {
   final dynamic details;
   final String? reasonPhrase;
 
-  FunctionException({required this.status, this.details, this.reasonPhrase});
+  const FunctionException({required this.status, this.details, this.reasonPhrase});
 
   @override
   String toString() =>