diff --git a/src/filter.rs b/src/filter.rs
index 4389f52..a8a74bf 100644
--- a/src/filter.rs
+++ b/src/filter.rs
@@ -42,7 +42,7 @@ pub type CardFilter = Box<dyn Fn(&SearchCard) -> bool>;
 pub type RawCardFilter = (Field, Operator, Value);
 
 pub fn fallback_filter(query: &str) -> Result<RawCardFilter, String> {
-    if query.contains(&OPERATOR_CHARS[..]) {
+    if query.contains(OPERATOR_CHARS) {
         return Err(format!("Invalid query: {query}"));
     }
     #[cfg(debug_assertions)]
diff --git a/src/parser.rs b/src/parser.rs
index 727fe86..f30e632 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -30,7 +30,7 @@ fn word_non_empty(input: &str) -> IResult<&str, &str> {
 }
 
 fn parse_raw_filter(input: &str) -> IResult<&str, RawCardFilter> {
-    preceded(multispace0, alt((complete(tuple((field, operator, value))), map_res(word_non_empty, |q| fallback_filter(q)))))(input)
+    preceded(multispace0, alt((complete(tuple((field, operator, value))), map_res(word_non_empty, fallback_filter))))(input)
 }
 
 fn field(input: &str) -> IResult<&str, Field> {