diff --git a/Dockerfile b/Dockerfile
index cc1038e..e5f0b58 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,4 +34,4 @@ ENV MTG_IP=0.0.0.0 \
 EXPOSE 3128 3129
 
 COPY --from=0 /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY --from=0 /go/src/github.com/9seconds/mtg /usr/local/bin/mtg
+COPY --from=0 /go/src/github.com/9seconds/mtg/mtg /usr/local/bin/mtg
diff --git a/obfuscated2/frame_test.go b/obfuscated2/frame_test.go
index 6b3d71c..9b2e475 100644
--- a/obfuscated2/frame_test.go
+++ b/obfuscated2/frame_test.go
@@ -34,7 +34,7 @@ func TestFrameMagic(t *testing.T) {
 }
 
 func TestFrameDC(t *testing.T) {
-	assert.Equal(t, int16(771), makeFrame().DC())
+	assert.Equal(t, int16(770), makeFrame().DC())
 }
 
 func TestFrameValid(t *testing.T) {
@@ -45,6 +45,11 @@ func TestFrameValid(t *testing.T) {
 	assert.False(t, frame.Valid())
 }
 
+func TestFrameDoubleInvert(t *testing.T) {
+	frame := makeFrame()
+	assert.Equal(t, frame, frame.Invert().Invert())
+}
+
 func TestFrameInvert(t *testing.T) {
 	frame := makeFrame()
 	reversed := frame.Invert()