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-rw-r--r--src/mame/video/sf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/video/sf.c b/src/mame/video/sf.c
index d358cdcf846..5952e4ae9c7 100644
--- a/src/mame/video/sf.c
+++ b/src/mame/video/sf.c
@@ -126,7 +126,7 @@ WRITE16_HANDLER( sf_gfxctrl_w )
INLINE int sf_invert(int nb)
{
- static int delta[4] = {0x00, 0x18, 0x18, 0x00};
+ static const int delta[4] = {0x00, 0x18, 0x18, 0x00};
return nb ^ delta[(nb >> 3) & 3];
}