diff --git a/manimlib/constants.py b/manimlib/constants.py
index 57ec438c..82d2298d 100644
--- a/manimlib/constants.py
+++ b/manimlib/constants.py
@@ -38,7 +38,7 @@ def initialize_directories(config):
                 "directory were both passed"
             )
 
-    TEX_DIR = config["tex_dir"] or os.path.join(MEDIA_DIR, "texs")
+    TEX_DIR = config["tex_dir"] or os.path.join(MEDIA_DIR, "Tex")
     TEXT_DIR = os.path.join(MEDIA_DIR, "texts")
     if not video_path_specified:
         VIDEO_DIR = os.path.join(MEDIA_DIR, "videos")
diff --git a/manimlib/mobject/svg/svg_mobject.py b/manimlib/mobject/svg/svg_mobject.py
index 219134f9..4798003a 100644
--- a/manimlib/mobject/svg/svg_mobject.py
+++ b/manimlib/mobject/svg/svg_mobject.py
@@ -286,17 +286,11 @@ class SVGMobject(VMobject):
 
     def flatten(self, input_list):
         output_list = []
-        while True:
-            if input_list == []:
-                break
-            for index, i in enumerate(input_list):
-                if type(i)== list:
-                    input_list = i + input_list[index+1:]
-                    break
-                else:
-                    output_list.append(i)
-                    input_list.pop(index)
-                    break
+        for i in input_list:
+            if isinstance(i, list):
+                output_list.extend(self.flatten(i))
+            else:
+                output_list.append(i)
         return output_list
 
     def get_all_childNodes_have_id(self, element):