diff --git a/compress/decompress.go b/compress/decompress.go
index 3d0b2bf11..0770b3961 100644
--- a/compress/decompress.go
+++ b/compress/decompress.go
@@ -187,7 +187,7 @@ func NewDecompressor(compressedFilePath string) (*Decompressor, error) {
 
 	for i < dictSize {
 		d, ns := binary.Uvarint(data[i:])
-		if d > 2048 {
+		if d > 64 { // mainnet has maxDepth 31
 			return nil, fmt.Errorf("dictionary is invalid: patternMaxDepth=%d", d)
 		}
 		depths = append(depths, d)