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-rw-r--r--ext/mbstring/mbstring.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 1e3649e2c5..0fb57b0165 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2819,7 +2819,7 @@ PHP_FUNCTION(mb_substr)
}
if (((MBSTRG(func_overload) & MB_OVERLOAD_STRING) == MB_OVERLOAD_STRING)
- && (real_from >= mbfl_strlen(&string))) {
+ && (real_from > mbfl_strlen(&string))) {
RETURN_FALSE;
}