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-rw-r--r--Src/Modules/files.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/Modules/files.c b/Src/Modules/files.c
index bb1cc0065..331507c64 100644
--- a/Src/Modules/files.c
+++ b/Src/Modules/files.c
@@ -605,7 +605,7 @@ static unsigned long getnumeric(char *p, int *errp)
 {
     unsigned long ret;
 
-    if(*p < '0' || *p > '9') {
+    if (!idigit(*p)) {
 	*errp = 1;
 	return 0;
     }