diff --git a/CTestCustom.cmake.in b/CTestCustom.cmake.in
index f78c936c8..2f36001ad 100644
--- a/CTestCustom.cmake.in
+++ b/CTestCustom.cmake.in
@@ -62,6 +62,7 @@ list(APPEND CTEST_CUSTOM_WARNING_EXCEPTION
   "warning.*This version of Mac OS X is unsupported"
   "clang.*: warning: argument unused during compilation: .-g"
   "note: in expansion of macro" # diagnostic context note
+  "cm(StringCommand|CTestTestHandler)\\.cxx.*warning.*rand.*may return deterministic values"
   "cm(StringCommand|CTestTestHandler)\\.cxx.*warning.*rand.*isn.*t random" # we do not do crypto
   "cm(StringCommand|CTestTestHandler)\\.cxx.*warning.*srand.*seed choices are.*poor" # we do not do crypto