diff --git a/desmume/src/FIFO.cpp b/desmume/src/FIFO.cpp
index b149381a2..85bad6cab 100644
--- a/desmume/src/FIFO.cpp
+++ b/desmume/src/FIFO.cpp
@@ -246,8 +246,6 @@ void GFX_FIFOsend(u8 cmd, u32 param)
 	NDS_RescheduleGXFIFO();
 }
 
-// this function used ONLY in new gxFIFO
-extern void execHardware_doAllDma(EDMAMode modeNum);
 // this function used ONLY in new gxFIFO
 BOOL GFX_PIPErecv(u8 *cmd, u32 *param)
 {