diff --git a/Lib/lib-stdwin/wdbframewin.py b/Lib/lib-stdwin/wdbframewin.py
index 3a7f6fed4f5..db3d1379b05 100644
--- a/Lib/lib-stdwin/wdbframewin.py
+++ b/Lib/lib-stdwin/wdbframewin.py
@@ -63,6 +63,8 @@ def command(self, detail):
 	
 	def mouse_down(self, detail):
 		(h, v), clicks, button, mask = detail
+		if clicks != 2:
+			return
 		i = v / stdwin.lineheight()
 		if 5 <= i < len(self.displaylist):
 			import string
diff --git a/Lib/stdwin/wdbframewin.py b/Lib/stdwin/wdbframewin.py
index 3a7f6fed4f5..db3d1379b05 100755
--- a/Lib/stdwin/wdbframewin.py
+++ b/Lib/stdwin/wdbframewin.py
@@ -63,6 +63,8 @@ def command(self, detail):
 	
 	def mouse_down(self, detail):
 		(h, v), clicks, button, mask = detail
+		if clicks != 2:
+			return
 		i = v / stdwin.lineheight()
 		if 5 <= i < len(self.displaylist):
 			import string