diff --git a/platform/core-api/src/com/intellij/lang/PsiBuilder.java b/platform/core-api/src/com/intellij/lang/PsiBuilder.java
index 54a517932a1e..bfcfc79a55cf 100644
--- a/platform/core-api/src/com/intellij/lang/PsiBuilder.java
+++ b/platform/core-api/src/com/intellij/lang/PsiBuilder.java
@@ -44,6 +44,7 @@ public interface PsiBuilder extends UserDataHolder, UserDataHolderUnprotected {
    *
    * @return the text being parsed
    */
+  @NotNull
   CharSequence getOriginalText();
 
   /**
diff --git a/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderAdapter.java b/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderAdapter.java
index 9cd3540180b0..24a4c4d2465c 100644
--- a/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderAdapter.java
+++ b/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderAdapter.java
@@ -28,10 +28,11 @@ import org.jetbrains.annotations.Nullable;
 public class PsiBuilderAdapter implements PsiBuilder {
   protected final PsiBuilder myDelegate;
 
-  public PsiBuilderAdapter(final PsiBuilder delegate) {
+  public PsiBuilderAdapter(@NotNull PsiBuilder delegate) {
     myDelegate = delegate;
   }
 
+  @NotNull
   public PsiBuilder getDelegate() {
     return myDelegate;
   }
@@ -41,6 +42,7 @@ public class PsiBuilderAdapter implements PsiBuilder {
     return myDelegate.getProject();
   }
 
+  @NotNull
   @Override
   public CharSequence getOriginalText() {
     return myDelegate.getOriginalText();
diff --git a/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderImpl.java b/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderImpl.java
index 9def988e47fe..10bb211c697e 100644
--- a/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderImpl.java
+++ b/platform/core-impl/src/com/intellij/lang/impl/PsiBuilderImpl.java
@@ -655,6 +655,7 @@ public class PsiBuilderImpl extends UserDataHolderBase implements PsiBuilder {
     }
   }
 
+  @NotNull
   @Override
   public CharSequence getOriginalText() {
     return myText;
diff --git a/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java b/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
index ddb8dc7e0f3b..d534a451cf2c 100644
--- a/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
+++ b/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
@@ -78,6 +78,7 @@ public class MasqueradingPsiBuilderAdapter extends PsiBuilderAdapter {
     initShrunkSequence();
   }
 
+  @NotNull
   @Override
   public CharSequence getOriginalText() {
     return myShrunkCharSequence;