diff --git a/src/monitor.c b/src/monitor.c
index 10d406b..54a6d04 100644
--- a/src/monitor.c
+++ b/src/monitor.c
@@ -50,6 +50,9 @@ static void nl80211_cleanup(void) {
     }
 }
 
+// Forward declaration
+static int verify_monitor_mode(const char *interface);
+
 // Helper function to bring interface up/down using ioctl
 static int set_interface_up(const char *interface, int up) {
     int sockfd;
@@ -300,7 +303,7 @@ static int get_interface_type_cb(struct nl_msg *msg, void *arg) {
 // Verify interface is in monitor mode
 static int verify_monitor_mode(const char *interface) {
     struct nl_msg *msg;
-    struct nl_cb *cb;
+    struct nl_cb *cb = NULL;
     int ifindex;
     int err = 0;
     uint32_t iftype = 0;
@@ -351,6 +354,14 @@ static int verify_monitor_mode(const char *interface) {
     nl80211_cleanup();
     
     return (iftype == NL80211_IFTYPE_MONITOR) ? 0 : -1;
+    
+nla_put_failure:
+    if (cb) {
+        nl_cb_put(cb);
+    }
+    nlmsg_free(msg);
+    nl80211_cleanup();
+    return -1;
 }
 
 // Get current channel from interface using netlink