diff --git a/src/sled/sigslot.cc b/src/sled/sigslot.cc
index 0438f60..183b599 100644
--- a/src/sled/sigslot.cc
+++ b/src/sled/sigslot.cc
@@ -4,13 +4,20 @@ namespace sigslot {
 
 #ifdef _SIGSLOT_HAS_POSIX_THREADS
 
-sled::Mutex *
+sled::RecursiveMutex *
 multi_threaded_global::get_mutex()
 {
-    static sled::Mutex g_mutex;
+    static sled::RecursiveMutex g_mutex;
     return &g_mutex;
 }
 
+// sled::Mutex *
+// multi_threaded_global::get_mutex()
+// {
+//     static sled::Mutex g_mutex;
+//     return &g_mutex;
+// }
+
 // pthread_mutex_t *
 // multi_threaded_global::get_mutex()
 // {
diff --git a/src/sled/sigslot.h b/src/sled/sigslot.h
index 424d61e..0dd438b 100644
--- a/src/sled/sigslot.h
+++ b/src/sled/sigslot.h
@@ -196,7 +196,8 @@ public:
     }
 
 private:
-    static sled::Mutex *get_mutex();
+    static sled::RecursiveMutex *get_mutex();
+    // static sled::Mutex *get_mutex();
     // static pthread_mutex_t *get_mutex();
 };
 
@@ -224,7 +225,8 @@ public:
     }
 
 private:
-    sled::Mutex mutex_;
+    sled::RecursiveMutex mutex_;
+    // sled::Mutex mutex_;
     // pthread_mutex_t m_mutex;
 };
 #endif// _SIGSLOT_HAS_POSIX_THREADS