diff --git a/projects/mtg/bin/Res/test/_tests.txt b/projects/mtg/bin/Res/test/_tests.txt
index 85d34d28f..e3b7f9d70 100644
--- a/projects/mtg/bin/Res/test/_tests.txt
+++ b/projects/mtg/bin/Res/test/_tests.txt
@@ -100,6 +100,7 @@ cathodion.txt
 celestial_purge.txt
 chainbreaker.txt
 circle_of_protection.txt
+circle_of_protection_i211.txt
 civic_wayfinder.txt
 clone.txt
 clone2.txt
diff --git a/projects/mtg/bin/Res/test/circle_of_protection_i211.txt b/projects/mtg/bin/Res/test/circle_of_protection_i211.txt
new file mode 100644
index 000000000..ad5fb070c
--- /dev/null
+++ b/projects/mtg/bin/Res/test/circle_of_protection_i211.txt
@@ -0,0 +1,27 @@
+#Testing circle of protection (black) with a Black Knight attack
+#see http://code.google.com/p/wagic/issues/detail?id=211
+[INIT]
+COMBATATTACKERS
+[PLAYER1]
+inplay:Black Knight
+[PLAYER2]
+inplay:1335,plains
+[DO]
+Black Knight
+next
+#blockers
+plains
+1335
+Black Knight
+next
+#damage
+next
+#combatend
+[ASSERT]
+COMBATEND
+[PLAYER1]
+inplay:Black Knight
+[PLAYER2]
+inplay:1335,plains
+life:20
+[END]
\ No newline at end of file
diff --git a/projects/mtg/include/AllAbilities.h b/projects/mtg/include/AllAbilities.h
index bb33baa4b..ee8660be5 100644
--- a/projects/mtg/include/AllAbilities.h
+++ b/projects/mtg/include/AllAbilities.h
@@ -1287,6 +1287,7 @@ protected:
  public:
  ACircleOfProtection(int _id, MTGCardInstance * source, int _color):TargetAbility(_id,source,NEW SpellOrPermanentTargetChooser(source,_color),NEW ManaCost(),0,0){
     cost->add(Constants::MTG_COLOR_ARTIFACT,1);
+    tc->targetter = NULL; //Circle of Protection doesn't use the word "source"
   }
 
   int resolve(){