--- a/libbb/dump.c
+++ b/libbb/dump.c
@@ -301,7 +301,7 @@ static NOINLINE void rewrite(priv_dumper
 		) {
 			fu->reps += (dumper->blocksize - fs->bcnt) / fu->bcnt;
 		}
-		if (fu->reps > 1) {
+		if (fu->reps > 1 && fu->nextpr) {
 			for (pr = fu->nextpr;; pr = pr->nextpr)
 				if (!pr->nextpr)
 					break;