diff --git a/src/runtime/call/call.c b/src/runtime/call/call.c
index 4b3a095..6efcff1 100644
--- a/src/runtime/call/call.c
+++ b/src/runtime/call/call.c
@@ -134,8 +134,7 @@ void run_call(ArgonObject *original_object, size_t argc, ArgonObject **argv,
                         0);
     }
     if (CStackFrame) {
-      ArgonObject ** registers = ar_alloc(object->value.argon_fn->translated.registerCount *
-                    sizeof(ArgonObject *)); // fixed on the stack for speed purposes
+      ArgonObject * registers[MAX_REGISTERS]; // fixed on the stack for speed purposes
       StackFrame new_stackFrame = {
           {object->value.argon_fn->translated.registerCount,
            object->value.argon_fn->translated.registerAssignment,