Fix warning

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index 5d4b138f8e..7baf3f4c92 100644
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -1628,7 +1628,7 @@ static void exif_iif_add_value(image_info_type *image_info, int section_index, c
 			} else {
 				info_value = &info_data->value;
 			}
-			for (idex=0,vptr=value; idex<length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
+			for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
 				if (length>1) {
 					info_value = &info_data->value.list[idex];
 				}