diff --git a/cockatrice/src/game/filters/filter_string.cpp b/cockatrice/src/game/filters/filter_string.cpp
index 039dcdb9f..21822a32d 100644
--- a/cockatrice/src/game/filters/filter_string.cpp
+++ b/cockatrice/src/game/filters/filter_string.cpp
@@ -12,13 +12,13 @@ Start <- QueryPartList
 ~ws <- [ ]+
 QueryPartList <- ComplexQueryPart ( ws ("and" ws)? ComplexQueryPart)* ws*
 
-ComplexQueryPart <- SomewhatComplexQueryPart ws $or<[oO][rR]> ws ComplexQueryPart / SomewhatComplexQueryPart
+ComplexQueryPart <- SomewhatComplexQueryPart ws $or<[O][R]> ws ComplexQueryPart / SomewhatComplexQueryPart
 
 SomewhatComplexQueryPart <- [(] QueryPartList [)] / QueryPart
 
 QueryPart <- NotQuery / SetQuery / RarityQuery / CMCQuery / FormatQuery / PowerQuery / ToughnessQuery / ColorQuery / TypeQuery / OracleQuery / FieldQuery / GenericQuery
 
-NotQuery <- ('not' ws/'-') SomewhatComplexQueryPart
+NotQuery <- ('NOT' ws/'-') SomewhatComplexQueryPart
 SetQuery <- ('e'/'set') [:] FlexStringValue
 OracleQuery <- 'o' [:] RegexString