diff --git a/source/duke3d/src/mpu401.cpp b/source/duke3d/src/mpu401.cpp
index 0b0af6eb0..0c7b9b9f2 100644
--- a/source/duke3d/src/mpu401.cpp
+++ b/source/duke3d/src/mpu401.cpp
@@ -45,13 +45,6 @@ static HMIDISTRM hmido = (HMIDISTRM)-1;
 static MIDIOUTCAPS midicaps;
 static DWORD mididevice = -1;
 
-typedef struct
-{
-    int32_t time;
-    int32_t stream;
-    int32_t event;
-}
-MIDIEVENTHEAD;
 #define PAD(x) ((((x)+3)&(~3)))
 
 #define BUFFERLEN (32*4*4)