diff --git a/direct/src/showbase/OnScreenDebug.py b/direct/src/showbase/OnScreenDebug.py
index 09c58d610d..5de50e1856 100755
--- a/direct/src/showbase/OnScreenDebug.py
+++ b/direct/src/showbase/OnScreenDebug.py
@@ -69,5 +69,14 @@ class OnScreenDebug:
     def remove(self, key):
         del self.data[key]
 
+    def removeAllWithPrefix(self, prefix):
+        toRemove = []
+        for key in self.data.keys():
+            if len(key) >= len(prefix):
+                if key[:len(prefix)] == prefix:
+                    toRemove.append(key)
+        for key in toRemove:
+            self.remove(key)
+
     def append(self, text):
         self.text += text