diff --git a/zsnes/src/chips/dsp4emu.c b/zsnes/src/chips/dsp4emu.c
index 85301e3d..709b24f5 100644
--- a/zsnes/src/chips/dsp4emu.c
+++ b/zsnes/src/chips/dsp4emu.c
@@ -144,7 +144,7 @@ int16 OAM_Row[32];          // current number of tiles per row
 
 // input protocol
 
-inline int16 DSP4_READ_WORD()
+static int16 DSP4_READ_WORD()
 {
   int16 out;
 
@@ -154,7 +154,7 @@ inline int16 DSP4_READ_WORD()
   return out;
 }
 
-inline int32 DSP4_READ_DWORD()
+static int32 DSP4_READ_DWORD()
 {
   int32 out;