diff --git a/panon/effect/build_shader_source.py b/panon/effect/build_shader_source.py
index 2d56612..8c30957 100644
--- a/panon/effect/build_shader_source.py
+++ b/panon/effect/build_shader_source.py
@@ -31,7 +31,7 @@ def hex2vec4(value):
     if len(nums) < 4:
         nums.insert(0,1)
     assert len(nums) == 4
-    return "vec4(%f,%f,%f,%f)" % tuple(nums[1:]+num[:1])
+    return "vec4(%f,%f,%f,%f)" % tuple(nums[1:]+nums[:1])
 
 
 def format_value(type_, value):
diff --git a/plasmoid/metadata.desktop b/plasmoid/metadata.desktop
index 680cc1b..1df06f1 100644
--- a/plasmoid/metadata.desktop
+++ b/plasmoid/metadata.desktop
@@ -9,7 +9,7 @@ X-KDE-ServiceTypes=Plasma/Applet
 X-KDE-PluginInfo-Author=rbn42
 X-KDE-PluginInfo-Email=
 X-KDE-PluginInfo-Name=panon
-X-KDE-PluginInfo-Version=0.4.0
+X-KDE-PluginInfo-Version=0.4.1
 X-KDE-PluginInfo-Website=github.com/rbn42/panon
 X-KDE-PluginInfo-Category=Multimedia
 X-KDE-PluginInfo-Depends=