diff --git a/roaring/roaring.go b/roaring/roaring.go
index efbf48374..c3e50a940 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -1368,6 +1368,7 @@ func unionArrayBitmap(a, b *container) *container {
 			break
 		} else if i >= len(a.array) {
 			output.add(vb)
+			continue
 		} else if eof {
 			output.add(a.array[i])
 			i++