diff --git a/test/fuzzing/oss-fuzz.sh b/test/fuzzing/oss-fuzz.sh
index fb04737661..5adb677531 100644
--- a/test/fuzzing/oss-fuzz.sh
+++ b/test/fuzzing/oss-fuzz.sh
@@ -15,6 +15,13 @@
 #
 ################################################################################
 
+if [ "$SANITIZER" = "undefined" ]
+then
+    sed -i '/static void DoProfiling/i __attribute__((no_sanitize("undefined")))'   src/brpc/builtin/hotspots_service.cpp
+    sed -i '/void PProfService::heap/i __attribute__((no_sanitize("undefined")))'   src/brpc/builtin/pprof_service.cpp
+    sed -i '/void PProfService::growth/i __attribute__((no_sanitize("undefined")))' src/brpc/builtin/pprof_service.cpp
+fi
+
 mkdir -p build && cd build
 
 cmake \