diff --git a/include/portable.h.in b/include/portable.h.in
index c372fad871..52822fab4f 100644
--- a/include/portable.h.in
+++ b/include/portable.h.in
@@ -845,9 +845,9 @@
 
 /* begin of postamble */
 
-#ifndef __NEEDS_PROTOTYPES
+#ifndef __NEED_PROTOTYPES
 /* force LDAP_P to always include prototypes */
-#define __NEEDS_PROTOTYPES 1
+#define __NEED_PROTOTYPES 1
 #endif
 
 #ifdef HAVE_STDDEF_H
diff --git a/include/portable.nt b/include/portable.nt
index 8e515f34a2..07886f78f4 100644
--- a/include/portable.nt
+++ b/include/portable.nt
@@ -734,9 +734,9 @@ typedef char * caddr_t;
 
 /* begin of postamble */
 
-#ifndef __NEEDS_PROTOTYPES
+#ifndef __NEED_PROTOTYPES
 /* force LDAP_P to always include prototypes */
-#define __NEEDS_PROTOTYPES 1 
+#define __NEED_PROTOTYPES 1 
 #endif
 
 #ifdef HAVE_STDDEF_H