diff --git a/demo/extracttexture.c b/demo/extracttexture.c
index 268f58f..f686ff7 100644
--- a/demo/extracttexture.c
+++ b/demo/extracttexture.c
@@ -23,7 +23,7 @@ void extracttextures(const char *filedata,
         DEVIL1TEX.gettextures(t, i, filedata, filesize);
         for (j = 0; j < d -> texNumber; j++) {
             sprintf(fmt, "%s_%d.dds", filename, id);
-            write(fmt, t[j].data, d -> textureSize);
+            write(fmt, (char*)t[j].data, d -> textureSize);
             id++;
         }
         free(t);