diff --git a/src/matcher.go b/src/matcher.go
index 3ea2fbe..d320697 100644
--- a/src/matcher.go
+++ b/src/matcher.go
@@ -200,7 +200,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 	}
 
 	partialResults := make([][]*Item, numSlices)
-	for range slices {
+	for _, _ = range slices {
 		partialResult := <-resultChan
 		partialResults[partialResult.index] = partialResult.matches
 	}