diff --git a/tools/zio-dump.c b/tools/zio-dump.c
index 591d4bff1ad8015c3118a682152a97b8114c6af8..5e1f5027effcbd2a3330e01ece13e0502397d02d 100644
--- a/tools/zio-dump.c
+++ b/tools/zio-dump.c
@@ -72,7 +72,7 @@ void read_channel(int cfd, int dfd, FILE *log)
 	       ctrl.seq_num,
 	       ctrl.nsamples,
 	       ctrl.ssize,
-	       ctrl.sbits,
+	       ctrl.nbits,
 	       ctrl.flags,
 	       ctrl.flags & ZIO_CONTROL_LITTLE_ENDIAN
 	       ? "little-endian" :