diff --git a/allegro_schrift.c b/allegro_schrift.c
index 1f85c39..5409670 100644
--- a/allegro_schrift.c
+++ b/allegro_schrift.c
@@ -204,15 +204,15 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
 		al_save_bitmap("schrift_test.png", gtex);
 
 		// convert texture to bitmap font
-		const unsigned int ranges_size = i*2;
-		int ranges[ranges_size];
+		const unsigned int ranges_size = i;
+		int ranges[ranges_size*2];
 		i = 0;
 		while (i < ranges_size) {
-			ranges[i] = (unsigned char)cache_text_str[i];
-			ranges[i+1] = (unsigned char)cache_text_str[i];
+			ranges[i*2] = (unsigned char)cache_text_str[i];
+			ranges[i*2+1] = (unsigned char)cache_text_str[i];
 			i++;
 		}
-		f = al_grab_font_from_bitmap(gtex, ranges_size/2, ranges);
+		f = al_grab_font_from_bitmap(gtex, ranges_size, ranges);
     ALLEGRO_DEBUG("Font %s loaded.\n", filename);
 
 		CLEANUP;