diff --git a/CTestCustom.cmake.in b/CTestCustom.cmake.in
index bc88271244..d924480117 100644
--- a/CTestCustom.cmake.in
+++ b/CTestCustom.cmake.in
@@ -101,6 +101,7 @@ list(APPEND CTEST_CUSTOM_WARNING_EXCEPTION
   "libuv/src/.*:[0-9]+:[0-9]+: warning: 1st function call argument is an uninitialized value"
   "libuv/src/.*:[0-9]+:[0-9]+: warning: Dereference of null pointer"
   "libuv/src/.*:[0-9]+:[0-9]+: warning: The left operand of '[^']+' is a garbage value"
+  "libuv/src/.*:[0-9]+:[0-9]+: warning: Value of '[^']+' was not checked and may be overwritten by function '[^']+'"
   "nghttp2/lib/.*:[0-9]+:[0-9]+: warning: Access to field '[^']+' results in a dereference of a null pointer"
   "nghttp2/lib/.*:[0-9]+:[0-9]+: warning: Dereference of null pointer"
   "nghttp2/lib/.*:[0-9]+:[0-9]+: warning: Value stored to '[^']+' is never read"