diff --git a/panda/src/pipeline/mutexDirect.I b/panda/src/pipeline/mutexDirect.I
index 1bcdcb0f4e..90767f906e 100755
--- a/panda/src/pipeline/mutexDirect.I
+++ b/panda/src/pipeline/mutexDirect.I
@@ -103,21 +103,6 @@ debug_is_locked() const {
   return true;
 }
 
-////////////////////////////////////////////////////////////////////
-//     Function: MutexDirect::debug_is_locked
-//       Access: Published
-//  Description: Returns true if the current thread has locked the
-//               Mutex, false otherwise.  This method is only intended
-//               for use in debugging, hence the method name; in the
-//               MutexDirect case, it always returns true, since
-//               there's not a reliable way to determine this
-//               otherwise.
-////////////////////////////////////////////////////////////////////
-INLINE bool MutexDirect::
-debug_is_locked() const {
-  return true;
-}
-
 ////////////////////////////////////////////////////////////////////
 //     Function: MutexDirect::set_name
 //       Access: Public