diff --git a/engine/client/cl_parse.c b/engine/client/cl_parse.c
index f9fe1b79f..ef65aa045 100644
--- a/engine/client/cl_parse.c
+++ b/engine/client/cl_parse.c
@@ -4912,6 +4912,7 @@ void CL_ParseServerMessage (void)
 			break;
 
 		case svcfte_trailparticles:
+#error CLDP_ParseTrailParticles() doesn't take any arguments.
 			CLDP_ParseTrailParticles(true);
 			break;
 		case svcfte_pointparticles: