diff --git a/epan/dissectors/packet-fp_mux.c b/epan/dissectors/packet-fp_mux.c
index 31bb26f792..6be6b726f4 100644
--- a/epan/dissectors/packet-fp_mux.c
+++ b/epan/dissectors/packet-fp_mux.c
@@ -382,7 +382,7 @@ void
 proto_reg_handoff_fp_mux(void)
 {
     dissector_add_uint_range_with_preference("udp.port", "", fp_mux_handle);
-    heur_dissector_add("udp", heur_dissect_fp_mux, "FP Mux over UDP", "fp_mux_udp", proto_fp_mux, HEURISTIC_ENABLE);
+    heur_dissector_add("udp", heur_dissect_fp_mux, "FP Mux over UDP", "fp_mux_udp", proto_fp_mux, HEURISTIC_DISABLE);
 }