diff --git a/modules/access_filter/dump.c b/modules/access_filter/dump.c
index 38139d0adfa6b13f73c570ec71e8125c0c71f5ba..b22c7f433c3eed1549a97b4a6705e04e93420792 100644
--- a/modules/access_filter/dump.c
+++ b/modules/access_filter/dump.c
@@ -25,7 +25,6 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <assert.h>
 #include <time.h>
 #include <errno.h>
 
@@ -166,7 +165,6 @@ static void Dump (access_t *access, const uint8_t *buffer, size_t len)
         goto error;
     }
 
-    assert (len > 0);
     if (fwrite (buffer, len, 1, stream) != 1)
     {
         msg_Err (access, "cannot write to file: %s", strerror (errno));