diff --git a/cockatrice/src/filters/deck_filter_string.cpp b/cockatrice/src/filters/deck_filter_string.cpp
index 42a77fe5a..6b671831d 100644
--- a/cockatrice/src/filters/deck_filter_string.cpp
+++ b/cockatrice/src/filters/deck_filter_string.cpp
@@ -31,7 +31,7 @@ GenericQuery <- String
 
 NonDoubleQuoteUnlessEscaped <- '\\\"'. / !["].
 NonSingleQuoteUnlessEscaped <- "\\\'". / !['].
-UnescapedStringListPart <- !['":<>=! ].
+UnescapedStringListPart <- !['":<>()=! ].
 SingleApostropheString <- (UnescapedStringListPart+ ws*)* ['] (UnescapedStringListPart+ ws*)*
 
 String <- SingleApostropheString / UnescapedStringListPart+ / ["] <NonDoubleQuoteUnlessEscaped*> ["] / ['] <NonSingleQuoteUnlessEscaped*> [']
diff --git a/libcockatrice_filters/libcockatrice/filters/filter_string.cpp b/libcockatrice_filters/libcockatrice/filters/filter_string.cpp
index 0d29f7897..704e8fadb 100644
--- a/libcockatrice_filters/libcockatrice/filters/filter_string.cpp
+++ b/libcockatrice_filters/libcockatrice/filters/filter_string.cpp
@@ -46,7 +46,7 @@ FieldQuery <- String [:] MatcherString / String ws? NumericExpression
 
 NonDoubleQuoteUnlessEscaped <- '\\\"'. / !["].
 NonSingleQuoteUnlessEscaped <- "\\\'". / !['].
-UnescapedStringListPart <- !['":<>=! ].
+UnescapedStringListPart <- !['":<>()=! ].
 SingleApostropheString <- (UnescapedStringListPart+ ws*)* ['] (UnescapedStringListPart+ ws*)*
 String <- SingleApostropheString / UnescapedStringListPart+ / ["] <NonDoubleQuoteUnlessEscaped*> ["] / ['] <NonSingleQuoteUnlessEscaped*> [']
 StringValue <- String / [(] StringList [)]
diff --git a/tests/carddatabase/filter_string_test.cpp b/tests/carddatabase/filter_string_test.cpp
index c3e8c6fb7..c6d68be1f 100644
--- a/tests/carddatabase/filter_string_test.cpp
+++ b/tests/carddatabase/filter_string_test.cpp
@@ -71,6 +71,8 @@ QUERY(Color2, cat, "c:gw", true)
 QUERY(Color3, cat, "c!g", true)
 QUERY(Color4, cat, "c!gw", false)
 
+QUERY(BracketNextToUnquotedString, cat, "(o:woof OR o:meow)", true)
+
 } // namespace
 
 int main(int argc, char **argv)