diff --git a/Modules/CheckStructHasMember.cmake b/Modules/CheckStructHasMember.cmake
index 880a688e2..c8949cf26 100644
--- a/Modules/CheckStructHasMember.cmake
+++ b/Modules/CheckStructHasMember.cmake
@@ -70,7 +70,7 @@ ${_INCLUDE_FILES}
 int main()
 {
    ${_STRUCT}* tmp;
-   tmp->${_MEMBER};
+   (void) tmp->${_MEMBER};
    return 0;
 }
 ")