diff --git a/include/security/openpam_version.h b/include/security/openpam_version.h
index fc9eadc..65853e4 100644
--- a/include/security/openpam_version.h
+++ b/include/security/openpam_version.h
@@ -42,7 +42,4 @@
 #define OPENPAM_VERSION	20071221
 #define OPENPAM_RELEASE	"Hydrangea"
 
-/* violates reserved namespace, but can't be removed for legacy reasons */
-#define _OPENPAM
-
 #endif /* !SECURITY_OPENPAM_VERSION_H_INCLUDED */