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-rw-r--r--src/lib/ndpi_serializer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/ndpi_serializer.c b/src/lib/ndpi_serializer.c
index d368509a8..db768a8a2 100644
--- a/src/lib/ndpi_serializer.c
+++ b/src/lib/ndpi_serializer.c
@@ -71,7 +71,7 @@ u_int64_t ndpi_ntohll(u_int64_t v) {
/* ********************************** */
static int ndpi_is_number(const char *str, u_int32_t str_len) {
- int i;
+ unsigned int i;
for(i = 0; i < str_len; i++)
if(!isdigit(str[i])) return(0);