diff --git a/plugins/win-mf/mf-aac-encoder.cpp b/plugins/win-mf/mf-aac-encoder.cpp
index 5ac949e20..31363347c 100644
--- a/plugins/win-mf/mf-aac-encoder.cpp
+++ b/plugins/win-mf/mf-aac-encoder.cpp
@@ -136,14 +136,7 @@ void MFAAC::Encoder::InitializeExtraData()
 	*extraData16 |= channels << 3;
 	*extraData16 = SWAPU16(*extraData16);
 
-	// Extensions
-	extraData16++;
-	*extraData16 = 0x2b7 << 5;
-	// Profile
-	*extraData16 |= profile;
-	*extraData16 = SWAPU16(*extraData16);
-
-	extraData[4] = 0;
+	extraData[2] = 0;
 #undef SWAPU16
 }
 
diff --git a/plugins/win-mf/mf-aac-encoder.hpp b/plugins/win-mf/mf-aac-encoder.hpp
index d9aa2d25e..5ca83371e 100644
--- a/plugins/win-mf/mf-aac-encoder.hpp
+++ b/plugins/win-mf/mf-aac-encoder.hpp
@@ -74,7 +74,7 @@ private:
 	ComPtr<IMFTransform> transform;
 	ComPtr<IMFSample> outputSample;
 	std::vector<BYTE> packetBuffer;
-	UINT8 extraData[5];
+	UINT8 extraData[3];
 };
 
 static const UINT32 FrameSize = 1024;