diff --git a/include/libwebsockets/lws-eventlib-exports.h b/include/libwebsockets/lws-eventlib-exports.h
index fedccc286..87c4085b3 100644
--- a/include/libwebsockets/lws-eventlib-exports.h
+++ b/include/libwebsockets/lws-eventlib-exports.h
@@ -58,4 +58,29 @@ lws_destroy_event_pipe(struct lws *wsi);
 LWS_VISIBLE LWS_EXTERN void
 __lws_close_free_wsi_final(struct lws *wsi);
 
+#if LWS_MAX_SMP > 1
 
+struct lws_mutex_refcount {
+	pthread_mutex_t lock;
+	pthread_t lock_owner;
+	const char *last_lock_reason;
+	char lock_depth;
+	char metadata;
+};
+
+LWS_VISIBLE LWS_EXTERN void
+lws_mutex_refcount_assert_held(struct lws_mutex_refcount *mr);
+
+LWS_VISIBLE LWS_EXTERN void
+lws_mutex_refcount_init(struct lws_mutex_refcount *mr);
+
+LWS_VISIBLE LWS_EXTERN void
+lws_mutex_refcount_destroy(struct lws_mutex_refcount *mr);
+
+LWS_VISIBLE LWS_EXTERN void
+lws_mutex_refcount_lock(struct lws_mutex_refcount *mr, const char *reason);
+
+LWS_VISIBLE LWS_EXTERN void
+lws_mutex_refcount_unlock(struct lws_mutex_refcount *mr);
+
+#endif
diff --git a/lib/core/private-lib-core.h b/lib/core/private-lib-core.h
index 55d4aeab0..b47b4b2b2 100644
--- a/lib/core/private-lib-core.h
+++ b/lib/core/private-lib-core.h
@@ -231,32 +231,6 @@ struct lws_foreign_thread_pollfd {
 };
 #endif /* network */
 
-#if LWS_MAX_SMP > 1
-
-struct lws_mutex_refcount {
-	pthread_mutex_t lock;
-	pthread_t lock_owner;
-	const char *last_lock_reason;
-	char lock_depth;
-	char metadata;
-};
-
-void
-lws_mutex_refcount_init(struct lws_mutex_refcount *mr);
-
-void
-lws_mutex_refcount_destroy(struct lws_mutex_refcount *mr);
-
-void
-lws_mutex_refcount_lock(struct lws_mutex_refcount *mr, const char *reason);
-
-void
-lws_mutex_refcount_assert_held(struct lws_mutex_refcount *mr);
-
-void
-lws_mutex_refcount_unlock(struct lws_mutex_refcount *mr);
-#endif
-
 #if defined(LWS_WITH_NETWORK)
 #include "private-lib-core-net.h"
 #endif