diff --git a/cde/config/cf/sun.cf b/cde/config/cf/sun.cf
index 956da3ff0..e238bd214 100644
--- a/cde/config/cf/sun.cf
+++ b/cde/config/cf/sun.cf
@@ -368,6 +368,8 @@ man_keywords::								@@\
 #define SharedXdmcpRev 6
 #endif
 
+#define HasMakefileSafeInclude	YES
+#define IncludeMakefile(file)	HASH_SIGN dependencies are in .depend
 #define DependFileName		.depend
 #if HasSunC
 #define DependDefines		-D__BUILTIN_VA_ARG_INCR