1 files changed, 1 insertions, 1 deletions

diff --git a/src/fnetfilter/main.c b/src/fnetfilter/main.c
index ba58ba3c9..d8b950e8f 100644
--- a/src/fnetfilter/main.c
+++ b/src/fnetfilter/main.c
@@ -125,7 +125,7 @@ for (i = 0; i < argcnt; i++)
                         else {
                                 // parsing
                                 int index = 0;
-                                int rv = sscanf(ptr, "$ARG%u", &index) ;
+                                int rv = sscanf(ptr, "$ARG%d", &index) ;
                                 if (rv != 1) {
                                         fprintf(stderr, "Error fnetfilter: invalid template argument on line %d\n", line);
                                         exit(1);