diff --git a/src/boot/idle.c b/src/boot/idle.c
index 080fdcfb35..d5cbe8d69b 100644
--- a/src/boot/idle.c
+++ b/src/boot/idle.c
@@ -51,7 +51,7 @@ void Idle_ThreadEntry(void* arg) {
 
     osCreateViManager(OS_PRIORITY_VIMGR);
 
-    gViConfigFeatures = 0x42;
+    gViConfigFeatures = OS_VI_GAMMA_OFF | OS_VI_DITHER_FILTER_ON;
     gViConfigXScale = 1.0f;
     gViConfigYScale = 1.0f;
 
diff --git a/src/code/fault.c b/src/code/fault.c
index a537f821e4..79141e8182 100644
--- a/src/code/fault.c
+++ b/src/code/fault.c
@@ -894,7 +894,7 @@ void Fault_CommitFB() {
     u16* fb;
     osViSetYScale(1.0f);
     osViSetMode(&osViModeNtscLan1);
-    osViSetSpecialFeatures(0x42); // gama_disable|dither_fliter_enable_aa_mode3_disable
+    osViSetSpecialFeatures(OS_VI_GAMMA_OFF | OS_VI_DITHER_FILTER_ON);
     osViBlack(false);
 
     if (sFaultStructPtr->fb) {
diff --git a/src/code/sched.c b/src/code/sched.c
index 95385f1272..d88af29f89 100644
--- a/src/code/sched.c
+++ b/src/code/sched.c
@@ -46,10 +46,10 @@ void Sched_SwapFrameBuffer(CfbInfo* cfbInfo) {
             HREG(95) = 0xD;
         }
         if (HREG(80) == 0xD && HREG(81) == 2) {
-            osViSetSpecialFeatures(HREG(82) != 0 ? 1 : 2);
-            osViSetSpecialFeatures(HREG(83) != 0 ? 0x40 : 0x80);
-            osViSetSpecialFeatures(HREG(84) != 0 ? 0x4 : 0x8);
-            osViSetSpecialFeatures(HREG(85) != 0 ? 0x10 : 0x20);
+            osViSetSpecialFeatures(HREG(82) != 0 ? OS_VI_GAMMA_ON : OS_VI_GAMMA_OFF);
+            osViSetSpecialFeatures(HREG(83) != 0 ? OS_VI_DITHER_FILTER_ON : OS_VI_DITHER_FILTER_OFF);
+            osViSetSpecialFeatures(HREG(84) != 0 ? OS_VI_GAMMA_DITHER_ON : OS_VI_GAMMA_DITHER_OFF);
+            osViSetSpecialFeatures(HREG(85) != 0 ? OS_VI_DIVOT_ON : OS_VI_DIVOT_OFF);
         }
     }
     cfbInfo->unk_10 = 0;