diff --git a/tests/src/threading_helpers.c b/tests/src/threading_helpers.c
index ca91b79..f5a9564 100644
--- a/tests/src/threading_helpers.c
+++ b/tests/src/threading_helpers.c
@@ -160,7 +160,7 @@
             mbedtls_test_mutex_usage_error( mutex, "corrupted state" );
             break;
     }
-    return( ret );
+    return ret ;
 }
 
 static int mbedtls_test_wrap_mutex_unlock( mbedtls_threading_mutex_t *mutex )
@@ -182,7 +182,7 @@
             mbedtls_test_mutex_usage_error( mutex, "corrupted state" );
             break;
     }
-    return( ret );
+    return ret ;
 }
 
 void mbedtls_test_mutex_usage_init( void )