diff --git a/source/build/include/palette.h b/source/build/include/palette.h
index d8b6f0c21..b92140a3a 100644
--- a/source/build/include/palette.h
+++ b/source/build/include/palette.h
@@ -28,16 +28,17 @@ extern uint8_t curbasepal;
 
 #define paletteGetBlendTable(blend) (blendtable[blend])
 
-extern uint32_t PaletteIndexFullbrights[8];
+extern uint8_t PaletteIndexFullbrights[32];
+
 
 inline bool IsPaletteIndexFullbright(uint8_t col)
 {
-	return (PaletteIndexFullbrights[col >> 5] & (1u << (col & 31)));
+	return (PaletteIndexFullbrights[col >> 3] & (1u << (col & 7)));
 }
 
 inline void SetPaletteIndexFullbright(int col)
 {
-	PaletteIndexFullbrights[col >> 5] |= (1u << (col & 31));
+	PaletteIndexFullbrights[col >> 3] |= (1u << (col & 7));
 }
 
 struct palette_t 
diff --git a/source/build/src/palette.cpp b/source/build/src/palette.cpp
index 569ffef40..d719f4811 100644
--- a/source/build/src/palette.cpp
+++ b/source/build/src/palette.cpp
@@ -335,7 +335,7 @@ void paletteLoadFromDisk(void)
     }
 }
 
-uint32_t PaletteIndexFullbrights[8];
+uint8_t PaletteIndexFullbrights[32];
 
 void palettePostLoadTables(void)
 {