diff --git a/Tests/CTestTestCrash/crash.cxx b/Tests/CTestTestCrash/crash.cxx
index 370c3fbbe0..88d4b1d2cf 100644
--- a/Tests/CTestTestCrash/crash.cxx
+++ b/Tests/CTestTestCrash/crash.cxx
@@ -1,6 +1,6 @@
 // causes a segfault
 int main()
 {
-  int* ptr = 0;
+  volatile int* ptr = 0;
   *ptr = 1;
 }