diff --git a/testsuite/bunzip2/bunzip2-reads-from-standard-input b/testsuite/bunzip2/bunzip2-reads-from-standard-input
index 7bc842135..e212a1207 100644
--- a/testsuite/bunzip2/bunzip2-reads-from-standard-input
+++ b/testsuite/bunzip2/bunzip2-reads-from-standard-input
@@ -1,2 +1,2 @@
-echo foo | bzip2 -c | busybox bunzip2 -c > output
+echo foo | bzip2 | busybox bunzip2 > output
 echo foo | cmp - output
diff --git a/testsuite/gunzip/gunzip-reads-from-standard-input b/testsuite/gunzip/gunzip-reads-from-standard-input
index 0ab9fdd78..7c498c0ce 100644
--- a/testsuite/gunzip/gunzip-reads-from-standard-input
+++ b/testsuite/gunzip/gunzip-reads-from-standard-input
@@ -1,2 +1,2 @@
-echo foo | gzip -c | busybox gunzip -c > output
+echo foo | gzip | busybox gunzip > output
 echo foo | cmp - output