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-rw-r--r--src/ctype/isdigit.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ctype/isdigit.c b/src/ctype/isdigit.c
index bbd228ad..3c41d5b2 100644
--- a/src/ctype/isdigit.c
+++ b/src/ctype/isdigit.c
@@ -1,7 +1,7 @@
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
-#include "_assert.h"
+#include "_safety.h"
/** test whether a character is a digit **/