diff --git a/src/net/http/fs_test.go b/src/net/http/fs_test.go
index 9253ebe43a..c811891e87 100644
--- a/src/net/http/fs_test.go
+++ b/src/net/http/fs_test.go
@@ -978,9 +978,9 @@ func TestLinuxSendfile(t *testing.T) {
 
 	syscalls := "sendfile,sendfile64"
 	switch runtime.GOARCH {
-	case "mips64", "mips64le":
-		// mips64 strace doesn't support sendfile64 and will error out
-		// if we specify that with `-e trace='.
+	case "mips64", "mips64le", "s390x":
+		// strace on the above platforms doesn't support sendfile64
+		// and will error out if we specify that with `-e trace='.
 		syscalls = "sendfile"
 	}