diff --git a/lib/ProxySQL_Admin.cpp b/lib/ProxySQL_Admin.cpp
index 2de36105c..a9f45f0ad 100644
--- a/lib/ProxySQL_Admin.cpp
+++ b/lib/ProxySQL_Admin.cpp
@@ -7789,7 +7789,7 @@ char* ProxySQL_Admin::load_mcp_query_rules_to_runtime() {
 
 	if (success == false) {
 		if (resultset) {
-			free(resultset);
+			delete resultset;
 		}
 	}