diff --git a/platform/core-impl/src/com/intellij/core/CoreApplicationEnvironment.java b/platform/core-impl/src/com/intellij/core/CoreApplicationEnvironment.java
index 6cb941b2fbe6..71eff2aa9026 100644
--- a/platform/core-impl/src/com/intellij/core/CoreApplicationEnvironment.java
+++ b/platform/core-impl/src/com/intellij/core/CoreApplicationEnvironment.java
@@ -267,6 +267,10 @@ public class CoreApplicationEnvironment {
     });
   }
 
+  public void registerParserDefinition(Language language, ParserDefinition parserDefinition) {
+    addExplicitExtension(LanguageParserDefinitions.INSTANCE, language, parserDefinition);
+  }
+
   public <T> void addExplicitExtension(final FileTypeExtension<T> instance, final FileType fileType, final T object) {
     instance.addExplicitExtension(fileType, object);
     Disposer.register(myParentDisposable, new Disposable() {