diff --git a/gen/youtube3/cargo.toml b/gen/youtube3/cargo.toml
index 6769bcc0e8..c9df03052c 100644
--- a/gen/youtube3/cargo.toml
+++ b/gen/youtube3/cargo.toml
@@ -1,5 +1,5 @@
 # DO NOT EDIT !
-# This file was generated automatically from 'src/mako/cargo.toml.mako'
+# This file was generated automatically from 'src/mako/Cargo.toml.mako'
 # DO NOT EDIT !
 [package]
 
diff --git a/src/mako/deps.mako b/src/mako/deps.mako
index 4cff644eb5..12c87f81aa 100644
--- a/src/mako/deps.mako
+++ b/src/mako/deps.mako
@@ -109,8 +109,10 @@ help-api:
 
 % for info in apis['items']:
 <%
-	target_dir = directories.api_base + '/' + info['name'] + '/' + info['version']
-	target = target_dir + '/' + info['name'] + '-api.json'
+	import util
+	name = util.normalize_library_name(info['name'])
+	target_dir = directories.api_base + '/' + name + '/' + info['version']
+	target = target_dir + '/' + name + '-api.json'
 	## assure the target never actually exists to force him to wget whenver we ask !
 	fake_target = target + '-force'
 	json_api_targets.append(fake_target)
diff --git a/src/mako/lib/util.py b/src/mako/lib/util.py
index 64e2856194..5ec8f30858 100644
--- a/src/mako/lib/util.py
+++ b/src/mako/lib/util.py
@@ -704,6 +704,9 @@ def to_api_version(v):
         version = version + '_' + remainder
     return version
 
+def normalize_library_name(name):
+    return name.lower()
+
 # build a full library name (non-canonical)
 def library_name(name, version):
     version = to_api_version(version)
@@ -712,7 +715,7 @@ def library_name(name, version):
     if name[-1].isdigit():
         name += '_'
         version = 'v' + version
-    return name + version
+    return normalize_library_name(name) + version
 
 # return type name of a resource method builder, from a resource name
 def rb_type(r):