diff --git a/usr.bin/at/at.c b/usr.bin/at/at.c
index 283965ea068d..cb2fadb97419 100644
--- a/usr.bin/at/at.c
+++ b/usr.bin/at/at.c
@@ -63,6 +63,8 @@ __FBSDID("$FreeBSD$");
 #include "panic.h"
 #include "parsetime.h"
 #include "perm.h"
+
+#define MAIN
 #include "privs.h"
 
 /* Macros */
@@ -102,8 +104,6 @@ int fcreated;
 char atfile[] = ATJOB_DIR "12345678901234";
 char atverify = 0;		/* verify time instead of queuing job */
 char *namep;
-uid_t real_uid, effective_uid;
-gid_t real_gid, effective_gid;
 
 /* Function declarations */
 
diff --git a/usr.bin/at/privs.h b/usr.bin/at/privs.h
index c84f277507d2..50dd6b108af4 100644
--- a/usr.bin/at/privs.h
+++ b/usr.bin/at/privs.h
@@ -59,8 +59,15 @@
  * to the real userid before calling any of them.
  */
 
-extern uid_t real_uid, effective_uid;
-extern gid_t real_gid, effective_gid;
+#ifndef MAIN
+extern
+#endif
+uid_t real_uid, effective_uid;
+
+#ifndef MAIN 
+extern
+#endif
+gid_t real_gid, effective_gid;
 
 #define RELINQUISH_PRIVS { \
 	real_uid = getuid(); \