diff --git a/projects/mtg/bin/Res/test/manual/ai_fear.txt b/projects/mtg/bin/Res/test/manual/ai_fear.txt
new file mode 100644
index 000000000..30e400402
--- /dev/null
+++ b/projects/mtg/bin/Res/test/manual/ai_fear.txt
@@ -0,0 +1,16 @@
+#Bug:ai casts fear on opponent's creature
+[INIT]
+FIRSTMAIN
+[PLAYER1]
+inplay:grizzly bears,8333,8330
+hand:fear
+[PLAYER2]
+inplay:lord of atlantis
+[DO]
+ai
+ai
+[ASSERT]
+COMBATEND
+[PLAYER1]
+[PLAYER2]
+[END]
\ No newline at end of file
diff --git a/projects/mtg/src/MTGAbility.cpp b/projects/mtg/src/MTGAbility.cpp
index 1dec73d3e..9a009d606 100644
--- a/projects/mtg/src/MTGAbility.cpp
+++ b/projects/mtg/src/MTGAbility.cpp
@@ -658,13 +658,14 @@ int AbilityFactory::abilityEfficiency(MTGAbility * a, Player * p, int mode){
 
   if (AInstantBasicAbilityModifierUntilEOT * abi = dynamic_cast<AInstantBasicAbilityModifierUntilEOT *>(a)) {
       int result = badAbilities[abi->ability] ? BAKA_EFFECT_BAD : BAKA_EFFECT_GOOD;
-      return (abi->value <= 0) ? result : -result;
+      return (abi->value > 0) ? result : -result;
     }
   if (ABasicAbilityModifier * abi = dynamic_cast<ABasicAbilityModifier *>(a)){
     int result = (badAbilities[abi->ability]) ? BAKA_EFFECT_BAD : BAKA_EFFECT_GOOD;
-    return (abi->modifier <= 0) ? result : -result;
+    return (abi->modifier > 0) ? result : -result;
   }
-  if (ABasicAbilityAuraModifierUntilEOT * abi = dynamic_cast<ABasicAbilityAuraModifierUntilEOT *>(a)) return abilityEfficiency(abi->ability, p, mode);
+  if (ABasicAbilityAuraModifierUntilEOT * abi = dynamic_cast<ABasicAbilityAuraModifierUntilEOT *>(a)) 
+    return abilityEfficiency(abi->ability, p, mode);
   if (dynamic_cast<AManaProducer*>(a)) return BAKA_EFFECT_GOOD;
   return BAKA_EFFECT_DONTKNOW;
 }