diff --git a/ChangeLog b/ChangeLog
index c4405a3f..7bc847c0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 
 	* libmisc/limits.c, libmisc/obscure.c, src/login_nopam.c,
 	lib/pwauth.c: Avoid empty file when USE_PAM is set.
+	* libmisc/audit_help.c: Avoid empty file when WITH_AUDIT is not set.
 	* src/login_nopam.c: Fix warnings: resolve_hostname takes and
 	returns a constant string.
 
diff --git a/libmisc/audit_help.c b/libmisc/audit_help.c
index 21a26cc5..e13fe233 100644
--- a/libmisc/audit_help.c
+++ b/libmisc/audit_help.c
@@ -78,4 +78,6 @@ void audit_logger (int type, const char *pgname, const char *op,
 					NULL, NULL, NULL, result);
 }
 
+#else				/* WITH_AUDIT */
+extern int errno;	/* warning: ANSI C forbids an empty source file */
 #endif				/* WITH_AUDIT */