diff --git a/src2/main.c b/src2/main.c
index 8a4da9e7..357ebe2e 100644
--- a/src2/main.c
+++ b/src2/main.c
@@ -26,7 +26,7 @@ static char* read_file(const char* path) {
     return buffer;
 }
 
-void LineProfiler__tracefunc(py_Frame* frame, enum py_TraceEvent event);
+// void LineProfiler__tracefunc(py_Frame* frame, enum py_TraceEvent event);
 static char buf[2048];
 
 int main(int argc, char** argv) {
@@ -53,7 +53,8 @@ int main(int argc, char** argv) {
     py_initialize();
     py_sys_setargv(argc, argv);
 
-    if(profile) py_sys_settrace(LineProfiler__tracefunc, true);
+    assert(!profile);   // not implemented yet
+    // if(profile) py_sys_settrace(LineProfiler__tracefunc, true);
 
     if(filename == NULL) {
         printf("pocketpy " PK_VERSION " (" __DATE__ ", " __TIME__ ") ");