diff --git a/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp b/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
index def0dc399b5..cb47b2b2c72 100644
--- a/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
@@ -330,7 +330,14 @@ Interpreter::HandleExceptionResponse Interpreter::handle_exception(size_t& progr
     VERIFY_NOT_REACHED();
 }
 
-void Interpreter::run_bytecode(size_t entry_point)
+// FIXME: GCC takes a *long* time to compile with flattening, and it will time out our CI. :|
+#if defined(AK_COMPILER_CLANG)
+#    define FLATTEN_ON_CLANG FLATTEN
+#else
+#    define FLATTEN_ON_CLANG
+#endif
+
+FLATTEN_ON_CLANG void Interpreter::run_bytecode(size_t entry_point)
 {
     auto& running_execution_context = vm().running_execution_context();
     auto* locals = running_execution_context.locals.data();