diff --git a/compiler-tricks/not-constant.c b/compiler-tricks/not-constant.c
index 1da3ffc2f5..9fb4f275b1 100644
--- a/compiler-tricks/not-constant.c
+++ b/compiler-tricks/not-constant.c
@@ -1,2 +1,2 @@
 #include <git-compat-util.h>
-int false_but_the_compiler_does_not_know_it_;
+int false_but_the_compiler_does_not_know_it_ = 0;