diff --git a/epan/dissectors/packet-rlc.c b/epan/dissectors/packet-rlc.c
index 9d30bc5d9e..ae7da738d8 100644
--- a/epan/dissectors/packet-rlc.c
+++ b/epan/dissectors/packet-rlc.c
@@ -31,6 +31,7 @@
 #include <glib.h>
 
 #include <epan/packet.h>
+#include <epan/conversation.h>
 #include <epan/asn1.h>
 #include <epan/expert.h>
 #include <epan/prefs.h>