diff --git a/ml.cpp b/ml.cpp
index c183af1..7b5d6b4 100644
--- a/ml.cpp
+++ b/ml.cpp
@@ -1780,6 +1780,7 @@ void repl(MlEnvironment &env) {
 				code += input + "\n";
 			} catch (MlError &e) {
 				std::cerr << e.description() << std::endl;
+				MlPerfMon::instance().clear_callstack();
 			} catch (std::runtime_error &e) {
 				std::cerr << e.what() << std::endl;
 			}
@@ -1999,6 +2000,7 @@ int main(int argc, char *argv[]) {
 		std::cerr << e.description() << std::endl;
 	} catch (std::runtime_error &e) {
 		std::cerr << MlPerfMon::instance().callstack() << e.what() << std::endl;
+		MlPerfMon::instance().clear_callstack();
 	}
 
 	return 1;