--- a/src/aarender.c
+++ b/src/aarender.c
@@ -63,10 +63,10 @@ void aa_renderpalette(aa_context * c, __
 	errors[0] = calloc(1, (x2 + 5) * sizeof(int));
 	if (errors[0] == NULL)
 	    dither = AA_ERRORDISTRIB;
-	errors[0] += 3;
 	errors[1] = calloc(1, (x2 + 5) * sizeof(int));
 	if (errors[1] == NULL)
 	    free(errors[0]), dither = AA_ERRORDISTRIB;
+	errors[0] += 3;
 	errors[1] += 3;
 	cur = 0;
     }