diff --git a/support/support_stat_nanoseconds.c b/support/support_stat_nanoseconds.c
index 6a9e49cc88..accca0a603 100644
--- a/support/support_stat_nanoseconds.c
+++ b/support/support_stat_nanoseconds.c
@@ -29,7 +29,7 @@
 bool
 support_stat_nanoseconds (const char *path)
 {
-  bool support;
+  bool support = true;
 #ifdef __linux__
   /* Obtain the original timestamp to restore at the end.  */
   struct stat ost;