diff --git a/dix/Makefile.am b/dix/Makefile.am
index b29f2e189..42b5121fe 100644
--- a/dix/Makefile.am
+++ b/dix/Makefile.am
@@ -70,4 +70,4 @@ endif
 dix.c:
 	touch $@
 
-CLEANFILES = dix.c
+CLEANFILES = dix.c Xserver-dtrace.h