1 files changed, 1 insertions, 1 deletions
diff --git a/lib/md5.c b/lib/md5.c
index 39d2bb4e5..999e25ef3 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -29,7 +29,7 @@
 #include <stddef.h>
 #include <string.h>
 
-#ifdef USE_UNLOCKED_IO
+#if USE_UNLOCKED_IO
 # include "unlocked-io.h"
 #endif