1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/query2/engine/LetExpression.java b/src/main/java/com/google/devtools/build/lib/query2/engine/LetExpression.java
index a1cc7a7cbf..b5805d4544 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/engine/LetExpression.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/engine/LetExpression.java
@@ -89,7 +89,7 @@ class LetExpression extends QueryExpression {
   }
 
   @Override
-  public QueryExpression getMapped(QueryExpressionMapper mapper) {
+  public QueryExpression getMapped(QueryExpressionMapper mapper) throws QueryException {
     return mapper.map(this);
   }