diff --git a/idea/src/org/jetbrains/jet/plugin/JetFileType.java b/idea/src/org/jetbrains/jet/plugin/JetFileType.java
index e1b90f8e073..1dcc9763674 100644
--- a/idea/src/org/jetbrains/jet/plugin/JetFileType.java
+++ b/idea/src/org/jetbrains/jet/plugin/JetFileType.java
@@ -24,12 +24,12 @@ public class JetFileType extends LanguageFileType {
 
     @NotNull
     public String getDescription() {
-        return "Jet Language";
+        return "Kotlin";
     }
 
     @NotNull
     public String getDefaultExtension() {
-        return "jet";
+        return "kt";
     }
 
     public Icon getIcon() {
diff --git a/idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationType.java b/idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationType.java
index 5381d72b779..558d1bdb2ec 100644
--- a/idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationType.java
+++ b/idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationType.java
@@ -14,7 +14,7 @@ public class JetRunConfigurationType extends ConfigurationTypeBase {
     }
 
     public JetRunConfigurationType() {
-        super("JetRunConfigurationType", "Jet", "Jet", JetFileType.INSTANCE.getIcon());
+        super("JetRunConfigurationType", "Kotlin", "Kotlin", JetFileType.INSTANCE.getIcon());
         addFactory(new JetRunConfigurationFactory(this));
     }