diff --git a/sjplayer/src/sjplayer/Context.d b/sjplayer/src/sjplayer/Context.d
index 36ef82b..4c03068 100644
--- a/sjplayer/src/sjplayer/Context.d
+++ b/sjplayer/src/sjplayer/Context.d
@@ -7,7 +7,7 @@ import std.algorithm,
 import sjscript;
 
 import sjplayer.ElementInterface,
-       sjplayer.ElementProgramSet,
+       sjplayer.ProgramSet,
        sjplayer.ScheduledControllerInterface,
        sjplayer.VarStoreInterface;
 
@@ -18,7 +18,7 @@ struct Context {
   @disable this(this);
 
   ///
-  this(ParametersBlock[] params, ElementProgramSet programs) {
+  this(ParametersBlock[] params, ProgramSet programs) {
     auto varstore = new BlackHole!VarStoreInterface;
 
     import sjplayer.CircleElementScheduledController;
diff --git a/sjplayer/src/sjplayer/ElementProgramSet.d b/sjplayer/src/sjplayer/ProgramSet.d
similarity index 66%
rename from sjplayer/src/sjplayer/ElementProgramSet.d
rename to sjplayer/src/sjplayer/ProgramSet.d
index fd18719..e9be3fa 100644
--- a/sjplayer/src/sjplayer/ElementProgramSet.d
+++ b/sjplayer/src/sjplayer/ProgramSet.d
@@ -1,5 +1,5 @@
 /// License: MIT
-module sjplayer.ElementProgramSet;
+module sjplayer.ProgramSet;
 
 import std.meta,
        std.typecons;
@@ -7,10 +7,10 @@ import std.meta,
 import sjplayer.CircleElement;
 
 ///
-class ElementProgramSet {
+class ProgramSet {
  public:
   ///
-  alias ElementPrograms = Tuple!(CircleElementProgram);
+  alias Programs = Tuple!(CircleElementProgram);
 
   ///
   this() {
@@ -26,11 +26,11 @@ class ElementProgramSet {
 
   ///
   T Get(T)() out (r; r) {
-    enum index = staticIndexOf!(T, ElementPrograms.Types);
+    enum index = staticIndexOf!(T, Programs.Types);
     static assert(index >= 0);
     return programs_[index];
   }
 
  private:
-  ElementPrograms programs_;
+  Programs programs_;
 }
diff --git a/sjplayer/src/sjplayer/ScheduledControllerFactory.d b/sjplayer/src/sjplayer/ScheduledControllerFactory.d
index 27dfafd..5b31cba 100644
--- a/sjplayer/src/sjplayer/ScheduledControllerFactory.d
+++ b/sjplayer/src/sjplayer/ScheduledControllerFactory.d
@@ -11,7 +11,7 @@ import std.algorithm,
 import sjscript;
 
 import sjplayer.ElementInterface,
-       sjplayer.ElementProgramSet,
+       sjplayer.ProgramSet,
        sjplayer.ScheduledControllerInterface,
        sjplayer.VarStoreInterface,
        sjplayer.util.Period;
@@ -43,12 +43,12 @@ struct ElementScheduledControllerFactory(ScheduledController, ElementDrawer)
     Parameters!(__traits(getOverloads, ElementDrawer, "__ctor")[0])[0];
 
   static assert(staticIndexOf!(
-        ElementProgram, ElementProgramSet.ElementPrograms.Types) >= 0);
+        ElementProgram, ProgramSet.Programs.Types) >= 0);
   static assert(is(Element[] :
     Parameters!(__traits(getOverloads, ElementDrawer, "__ctor")[0])[1]));
 
   ///
-  this(ElementProgramSet programs, VarStoreInterface varstore) {
+  this(ProgramSet programs, VarStoreInterface varstore) {
     program_  = programs.Get!ElementProgram;
     varstore_ = varstore;
   }
diff --git a/sjplayer/src/sjplayer/package.d b/sjplayer/src/sjplayer/package.d
index 285fc8e..de2b085 100644
--- a/sjplayer/src/sjplayer/package.d
+++ b/sjplayer/src/sjplayer/package.d
@@ -5,15 +5,15 @@ import sjscript;
 
 public {
   import sjplayer.Context,
-         sjplayer.ElementProgramSet;
+         sjplayer.ProgramSet;
 }
 
 ///
-Context CreateContextFromText(string src, ElementProgramSet programs) {
+Context CreateContextFromText(string src, ProgramSet programs) {
   return src.CreateScriptAst().CreateContextFromScriptAst(programs);
 }
 ///
 Context CreateContextFromScriptAst(
-    ParametersBlock[] params, ElementProgramSet programs) {
+    ParametersBlock[] params, ProgramSet programs) {
   return Context(params, programs);
 }
diff --git a/sjplayer/standalone/main.d b/sjplayer/standalone/main.d
index 407549c..1b10d14 100644
--- a/sjplayer/standalone/main.d
+++ b/sjplayer/standalone/main.d
@@ -22,7 +22,7 @@ int main(string[] args) {
   scope(exit) sfMusic_destroy(music);
   sfMusic_play(music);
 
-  auto programs = new ElementProgramSet;
+  auto programs = new ProgramSet;
   scope(exit) programs.destroy();
 
   auto context = script_file.readText.CreateContextFromText(programs);