diff --git a/roaring/roaring.go b/roaring/roaring.go
index 6fc83c91e..d071bfd23 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -209,18 +209,6 @@ func (b *Bitmap) CountRange(start, end uint64) (n uint64) {
 	return n
 }
 
-// Stringify method for debugging.
-func (b *Bitmap) String() string {
-	var buffer bytes.Buffer
-	for i, v := range b.Slice() {
-		if i > 0 {
-			buffer.WriteString(" ")
-		}
-		buffer.WriteString(fmt.Sprintf("%d", v))
-	}
-	return buffer.String()
-}
-
 // Slice returns a slice of all integers in the bitmap.
 func (b *Bitmap) Slice() []uint64 {
 	var a []uint64