diff --git a/source/japi/draw.cpp b/source/japi/draw.cpp
index b361e92..6555394 100644
--- a/source/japi/draw.cpp
+++ b/source/japi/draw.cpp
@@ -58,7 +58,14 @@ namespace draw
         int sdl_pitch;
 
         SDL_LockTexture(surf, NULL, (void **)&sdl_pixels, &sdl_pitch);
-        for (uint32_t i = 0; i < w*h; ++i) sdl_pixels[i] = transparent==pixels[i] ? 0x00000000 : pal[pixels[i]] | 0xff000000;
+        int i=0;
+        for (int y=0; y<h; ++y) {
+            for (int x=0; x<w; ++x) {
+                sdl_pixels[x+y*(sdl_pitch/4)] = transparent==pixels[i] ? 0x00000000 : pal[pixels[i]] | 0xff000000;
+                i++;
+            }
+        }
+        //for (uint32_t i = 0; i < w*h; ++i) sdl_pixels[i] = transparent==pixels[i] ? 0x00000000 : pal[pixels[i]] | 0xff000000;
         SDL_UnlockTexture(surf);
 
         free(pal);