diff --git a/mips/mips_emit.h b/mips/mips_emit.h
index b36d637..2552ced 100644
--- a/mips/mips_emit.h
+++ b/mips/mips_emit.h
@@ -2366,10 +2366,9 @@ static void emit_pmemst_stub(
     mips_emit_andi(reg_temp, reg_a1, 0x7FFF);
 #elif defined(USE_RGBA5551_FORMAT)
   /* N64's native format */
-  //#error "TODO"
   #define palette_convert() \
     mips_emit_sll(reg_temp, reg_a1, 1); \
-    mips_emit_ori(reg_temp, reg_temp, 1);
+    mips_emit_ori(reg_temp, reg_temp, 1)
 #else
   /* 0BGR to RGB565 (clobbers a0) */
   #ifdef MIPS_HAS_R2_INSTS
diff --git a/video.cc b/video.cc
index 3f7dca2..567b200 100644
--- a/video.cc
+++ b/video.cc
@@ -1656,13 +1656,20 @@ static void order_layers(u32 layer_flags, u32 vcnt)
 
 #define BLND_MSK (SATR_MSK | SATG_MSK | SATB_MSK)
 
-#if defined(USE_XBGR1555_FORMAT) || defined(USE_RGBA5551_FORMAT)
+#if defined(USE_XBGR1555_FORMAT)
   #define OVFG_MSK 0x04000000
   #define OVFR_MSK 0x00008000
   #define OVFB_MSK 0x00000020
   #define SATG_MSK 0x03E00000
   #define SATR_MSK 0x00007C00
   #define SATB_MSK 0x0000001F
+#elif defined(USE_RGBA5551_FORMAT)
+  #define OVFG_MSK 0x08000000
+  #define OVFR_MSK 0x00010000
+  #define OVFB_MSK 0x00000040
+  #define SATG_MSK 0x07c00000
+  #define SATR_MSK 0x0000f800
+  #define SATB_MSK 0x0000003e
 #else
   #define OVFG_MSK 0x08000000
   #define OVFR_MSK 0x00010000