diff --git a/src/iosource/af_packet/CMakeLists.txt b/src/iosource/af_packet/CMakeLists.txt
index 66bf28de1d..50b37967ae 100644
--- a/src/iosource/af_packet/CMakeLists.txt
+++ b/src/iosource/af_packet/CMakeLists.txt
@@ -5,6 +5,8 @@ project(ZeekPluginAF_Packet)
 
 include(ZeekPlugin)
 
+add_compile_options(-Wunused -Werror)
+
 zeek_plugin_begin(Zeek AF_Packet)
 zeek_plugin_cc(src/Plugin.cc)
 zeek_plugin_cc(src/AF_Packet.cc)
diff --git a/src/iosource/af_packet/src/AF_Packet.cc b/src/iosource/af_packet/src/AF_Packet.cc
index 5c02b17c72..5e54130a31 100644
--- a/src/iosource/af_packet/src/AF_Packet.cc
+++ b/src/iosource/af_packet/src/AF_Packet.cc
@@ -223,13 +223,12 @@ bool AF_PacketSource::ExtractNextPacket(zeek::Packet* pkt)
     if ( ! socket_fd )
         return false;
 
-    struct tpacket3_hdr *packet = 0;
-    const u_char *data;
-    struct timeval ts;
-    while ( true )
-        {
-        if ( ! rx_ring->GetNextPacket(&packet) )
-            return false;
+	struct tpacket3_hdr *packet = 0;
+	const u_char *data;
+	while ( true )
+		{
+		if ( ! rx_ring->GetNextPacket(&packet) )
+			return false;
 
         current_hdr.ts.tv_sec = packet->tp_sec;
         current_hdr.ts.tv_usec = packet->tp_nsec / 1000;