1 files changed, 9 insertions, 1 deletions

diff --git a/plugins/utils.c b/plugins/utils.c
index 7e14b6e..e871c5f 100644
--- a/plugins/utils.c
+++ b/plugins/utils.c
@@ -230,13 +230,21 @@ bool is_intnonneg (char *number) {
  */
 bool is_int64(char *number, int64_t *target) {
         errno = 0;
-        uint64_t tmp = strtoll(number, NULL, 10);
+        char *endptr = { 0 };
+
+        int64_t tmp = strtoll(number, &endptr, 10);
         if (errno != 0) {
                 return false;
         }
+
+        if (*endptr == '\0') {
+                return 0;
+        }
+
         if (tmp < INT64_MIN || tmp > INT64_MAX) {
                 return false;
         }
+
         if (target != NULL) {
                 *target = tmp;
         }