diff --git a/http_test.go b/http_test.go
index 5185827..ad398db 100644
--- a/http_test.go
+++ b/http_test.go
@@ -23,7 +23,7 @@ func TestRequestReadGzippedBody(t *testing.T) {
 	}
 
 	if string(r.Header.Peek("Content-Encoding")) != "gzip" {
-		t.Fatalf("unexpected content-encoding: %q. Expecting %q", r.Header.Peek("Content-Encoding"))
+		t.Fatalf("unexpected content-encoding: %q. Expecting %q", r.Header.Peek("Content-Encoding"), "gzip")
 	}
 	if r.Header.ContentLength() != len(body) {
 		t.Fatalf("unexpected content-length: %d. Expecting %d", r.Header.ContentLength(), len(body))