diff --git a/sys/sys/conf.h b/sys/sys/conf.h
index af58f3951d27..c4a2a86b4df8 100644
--- a/sys/sys/conf.h
+++ b/sys/sys/conf.h
@@ -353,6 +353,9 @@ typedef void (*dev_clone_fn)(void *arg, char *name, int namelen, dev_t *result);
 
 int dev_stdclone(char *name, char **namep, const char *stem, int *unit);
 EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn);
+
+extern int dumping;		/* system is dumping */
+
 #endif /* _KERNEL */
 
 #endif /* !_SYS_CONF_H_ */
diff --git a/sys/sys/linedisc.h b/sys/sys/linedisc.h
index af58f3951d27..c4a2a86b4df8 100644
--- a/sys/sys/linedisc.h
+++ b/sys/sys/linedisc.h
@@ -353,6 +353,9 @@ typedef void (*dev_clone_fn)(void *arg, char *name, int namelen, dev_t *result);
 
 int dev_stdclone(char *name, char **namep, const char *stem, int *unit);
 EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn);
+
+extern int dumping;		/* system is dumping */
+
 #endif /* _KERNEL */
 
 #endif /* !_SYS_CONF_H_ */
diff --git a/sys/sys/systm.h b/sys/sys/systm.h
index 59ed157ae764..dfbba68d9923 100644
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -51,7 +51,6 @@ extern int suser_enabled;	/* suser_xxx() is permitted to return 0 */
 
 extern int cold;		/* nonzero if we are doing a cold boot */
 extern const char *panicstr;	/* panic message */
-extern int dumping;		/* system is dumping */
 extern char version[];		/* system version */
 extern char copyright[];	/* system copyright */