diff --git a/Lib/pdb.py b/Lib/pdb.py
index 865b5b5..f56941e 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -480,6 +480,7 @@
             # something went wrong
             print >>self.stdout, \
                 'Breakpoint index %r is not a number' % args[0]
+            return
         try:
             cond = args[1]
         except:
@@ -500,6 +501,7 @@
             # something went wrong
             print >>self.stdout, \
                 'Breakpoint index %r is not a number' % args[0]
+            return
         try:
             count = int(args[1].strip())
         except: