diff --git a/evaluator/evaluator.go b/evaluator/evaluator.go
index 7106587..c4c8e56 100644
--- a/evaluator/evaluator.go
+++ b/evaluator/evaluator.go
@@ -56,9 +56,13 @@ func parseBang(searchQuery string) (bang string, query string) {
 	endBang := regexEndBang.FindSubmatch([]byte(searchQuery))
 
 	if len(endBang) == 3 {
-		return string(endBang[2]), string(endBang[1])
+		bang = strings.ToLower(string(endBang[2]))
+		query = string(endBang[1])
+		return
 	} else if len(startBang) == 3 {
-		return string(startBang[1]), string(startBang[2])
+		bang = strings.ToLower(string(startBang[1]))
+		query = string(startBang[2])
+		return
 	} else {
 		return "", searchQuery
 	}