diff --git a/sys/kern/kern_mutex.c b/sys/kern/kern_mutex.c
index 00d0353f1ec..00ed475ab30 100644
--- a/sys/kern/kern_mutex.c
+++ b/sys/kern/kern_mutex.c
@@ -157,9 +157,9 @@ _mtx_lock_flags(struct mtx *m, int opts, const char *file, int line)
 void
 _mtx_unlock_flags(struct mtx *m, int opts, const char *file, int line)
 {
-
+#ifdef LOCK_PROFILING
 	struct lock_object lo;
-	
+#endif	
 	MPASS(curthread != NULL);
 	KASSERT(m->mtx_lock != MTX_DESTROYED,
 	    ("mtx_unlock() of destroyed mutex @ %s:%d", file, line));
@@ -176,7 +176,9 @@ _mtx_unlock_flags(struct mtx *m, int opts, const char *file, int line)
 	m->mtx_object.lo_flags &= ~LO_CONTESTED;
 #endif
 	_rel_sleep_lock(m, curthread, opts, file, line);
+#ifdef LOCK_PROFILING
 	lock_profile_release_lock(&lo);
+#endif	
 }
 
 void
@@ -200,9 +202,9 @@ _mtx_lock_spin_flags(struct mtx *m, int opts, const char *file, int line)
 void
 _mtx_unlock_spin_flags(struct mtx *m, int opts, const char *file, int line)
 {
-
+#ifdef LOCK_PROFILING
 	struct lock_object lo;
-	
+#endif	
 	MPASS(curthread != NULL);
 	KASSERT(m->mtx_lock != MTX_DESTROYED,
 	    ("mtx_unlock_spin() of destroyed mutex @ %s:%d", file, line));
@@ -218,7 +220,9 @@ _mtx_unlock_spin_flags(struct mtx *m, int opts, const char *file, int line)
 	m->mtx_object.lo_flags &= ~LO_CONTESTED;
 #endif
 	_rel_spin_lock(m);
+#ifdef LOCK_PROFILING	
 	lock_profile_release_lock(&lo);
+#endif
 }
 
 /*
diff --git a/sys/kern/kern_sx.c b/sys/kern/kern_sx.c
index 2381c06b979..967d7a56d57 100644
--- a/sys/kern/kern_sx.c
+++ b/sys/kern/kern_sx.c
@@ -228,9 +228,10 @@ _sx_try_xlock(struct sx *sx, const char *file, int line)
 void
 _sx_sunlock(struct sx *sx, const char *file, int line)
 {
+#ifdef LOCK_PROFILING
 	struct lock_object lo;
 	int count = -1;
-	
+#endif	
 	_sx_assert(sx, SX_SLOCKED, file, line);
 	mtx_lock(sx->sx_lock);
 
@@ -262,15 +263,18 @@ _sx_sunlock(struct sx *sx, const char *file, int line)
 	LOCK_LOG_LOCK("SUNLOCK", &sx->sx_object, 0, 0, file, line);
 
 	mtx_unlock(sx->sx_lock);
+#ifdef LOCK_PROFILING	
 	if (count == 0)
 		lock_profile_release_lock(&lo);
-
+#endif
 }
 
 void
 _sx_xunlock(struct sx *sx, const char *file, int line)
 {
+#ifdef LOCK_PROFILING	
 	struct lock_object lo;
+#endif
 	
 	_sx_assert(sx, SX_XLOCKED, file, line);
 	mtx_lock(sx->sx_lock);
@@ -298,7 +302,9 @@ _sx_xunlock(struct sx *sx, const char *file, int line)
 	LOCK_LOG_LOCK("XUNLOCK", &sx->sx_object, 0, 0, file, line);
 
 	mtx_unlock(sx->sx_lock);
+#ifdef LOCK_PROFILING	
 	lock_profile_release_lock(&lo);
+#endif
 }
 
 int