diff --git a/CTestCustom.cmake.in b/CTestCustom.cmake.in
index 47487497e..456a82cd6 100644
--- a/CTestCustom.cmake.in
+++ b/CTestCustom.cmake.in
@@ -19,5 +19,5 @@
 ##============================================================================
 
 list(APPEND CTEST_CUSTOM_WARNING_EXCEPTION
- "warning: ignoring loop annotation"
+  ".*warning: ignoring loop annotation.*"
 )