diff --git a/src/sdl_core.h b/src/sdl_core.h
index 047d4c0..8238c9e 100644
--- a/src/sdl_core.h
+++ b/src/sdl_core.h
@@ -54,7 +54,7 @@ extern void sdl_updateAll(MyRectangle *view_rect);
 extern void sdl_updateScreen(void);
 
 /* パレット関係 */
-extern void sdl_setPalette(Palette256 *pal, int src, int cnt);
+extern void sdl_setPalette(Palette256 *pal, int first, int count);
 
 /* 描画関係 */
 extern void sdl_drawRectangle(int x, int y, int w, int h, BYTE c);
diff --git a/src/sdl_draw.c b/src/sdl_draw.c
index e454650..2931b44 100644
--- a/src/sdl_draw.c
+++ b/src/sdl_draw.c
@@ -118,18 +118,14 @@ void sdl_updateAll(MyRectangle *view_rect) {
 }
 
 /* Color の複数個指定 */
-void sdl_setPalette(Palette256 *pal, int src, int cnt) {
-	int i;
-	
-	for (i = 0; i < cnt; i++) {
-		sdl_col[src + i].r = pal->red  [src + i];
-		sdl_col[src + i].g = pal->green[src + i];
-		sdl_col[src + i].b = pal->blue [src + i];
-	}
-	
-	if (sdl_dib->format->BitsPerPixel == 8) {
-		SDL_SetPaletteColors(sdl_dib->format->palette, sdl_col, src, cnt);
+void sdl_setPalette(Palette256 *pal, int first, int count) {
+	for (int i = 0; i < count; i++) {
+		sdl_col[first + i].r = pal->red  [first + i];
+		sdl_col[first + i].g = pal->green[first + i];
+		sdl_col[first + i].b = pal->blue [first + i];
 	}
+	if (sdl_dib->format->BitsPerPixel == 8)
+		SDL_SetPaletteColors(sdl_dib->format->palette, &sdl_col[first], first, count);
 }
 
 /* 矩形の描画 */