diff --git a/.gitignore b/.gitignore
index bcb04bb4..d2cefc13 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,4 @@ missing
 Makefile
 Makefile.in
 stamp-h1
+_codeql_detected_source_root
diff --git a/source/firewall/firewall.c b/source/firewall/firewall.c
index 4348d47e..809638b2 100644
--- a/source/firewall/firewall.c
+++ b/source/firewall/firewall.c
@@ -8978,9 +8978,13 @@ memset(buf, 0, sizeof(buf));
        {
            if(count == 0)
            {
+               int len = strlen(buf);
+               if(len > 0 && buf[len-1] == '\n')
+                   buf[len-1] = '\0';
+               
                errno = 0;
                numDev = strtol(buf, &endptr, 10);
-               if (endptr == buf || (*endptr != '\0' && *endptr != '\n') || errno == ERANGE)
+               if (endptr == buf || *endptr != '\0' || errno == ERANGE)
                {
                    FIREWALL_DEBUG("invalid data\n");
                    break;