diff --git a/gnu/usr.bin/perl/perl/config.h b/gnu/usr.bin/perl/perl/config.h
index 6a6d9fa2f07..c834f144391 100644
--- a/gnu/usr.bin/perl/perl/config.h
+++ b/gnu/usr.bin/perl/perl/config.h
@@ -386,7 +386,7 @@
  *	available to change the real, effective and saved gid of the current
  *	program.
  */
-#define	HAS_SETREGID		/**/
+#undef	HAS_SETREGID		/**/
 
 /* HAS_SETREUID
  *	This symbol, if defined, indicates that the setreuid routine is
@@ -397,19 +397,19 @@
  *	available to change the real, effective and saved uid of the current
  *	program.
  */
-#define	HAS_SETREUID		/**/
+#undef	HAS_SETREUID		/**/
 
 /* HAS_SETRGID
  *	This symbol, if defined, indicates that the setrgid routine is available
  *	to change the real gid of the current program.
  */
-#define	HAS_SETRGID		/**/
+#undef	HAS_SETRGID		/**/
 
 /* HAS_SETRUID
  *	This symbol, if defined, indicates that the setruid routine is available
  *	to change the real uid of the current program.
  */
-#define	HAS_SETRUID		/**/
+#undef	HAS_SETRUID		/**/
 
 
 /* HAS_SOCKET