diff --git a/level.c b/level.c
index d1fb371..20df4fe 100644
--- a/level.c
+++ b/level.c
@@ -13,20 +13,25 @@ void init_level(Game *g, Level *l, char *filepath) {
   l->data_size = 0;
   do {
     l->data[l->data_size++] = atoi(datum);
-  } while (datum = strtok_r(NULL, ",", &other_guy));
+  } while ((datum = strtok_r(NULL, ",", &other_guy)));
   l->width = l->data_size;
 
-  while (first_line = strtok_r(NULL, "\n", &line)) {
+  while ((first_line = strtok_r(NULL, "\n", &line))) {
     datum = strtok_r(first_line, ",", &other_guy);
     do {
       l->data[l->data_size++] = (char)atoi(datum);
-    } while (datum = strtok_r(NULL, ",", &other_guy));
+    } while ((datum = strtok_r(NULL, ",", &other_guy)));
   }
   l->length = l->data_size / l->width;
 
-  printf("Loaded level from '%s': %dx%d = %d total bytes\n", filepath, l->length, l->width, l->data_size);
+  printf(
+	 "Loaded level from '%s': %dx%d = %zd total bytes\n",
+	 filepath,
+	 l->length,
+	 l->width,
+	 l->data_size);
   UnloadFileText(file_text);
-  
+
   l->game = g;
 }