diff --git a/src/algo/algo.go b/src/algo/algo.go
index 2f0af3e4..7748a070 100644
--- a/src/algo/algo.go
+++ b/src/algo/algo.go
@@ -443,7 +443,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	// we fall back to the greedy algorithm.
 	// Also, we should not allow a very long pattern to avoid 16-bit integer
 	// overflow in the score matrix. 1000 is a safe limit.
-	if slab != nil && N*M > cap(slab.I16) || M > 1000 {
+	if slab != nil && int64(N)*int64(M) > int64(cap(slab.I16)) || M > 1000 {
 		return FuzzyMatchV1(caseSensitive, normalize, forward, input, pattern, withPos, slab)
 	}