diff --git a/cde/config/cf/OpenBSD.cf b/cde/config/cf/OpenBSD.cf
index f29789699..f0ba631eb 100644
--- a/cde/config/cf/OpenBSD.cf
+++ b/cde/config/cf/OpenBSD.cf
@@ -164,7 +164,7 @@ XCOMM operating system:  OSName (OSMajorVersion./**/OSMinorVersion./**/OSTeenyVe
 #define MkdirHierCmd		mkdir -p
 
 #ifndef CppCmd
-#define CppCmd          	/usr/libexec/cpp
+#define CppCmd          	/usr/libexec/cpp -traditional
 #endif
 #define StandardCppOptions	-traditional
 #define StandardCppDefines	/**/