1 files changed, 1 insertions, 0 deletions
diff --git a/libsolidity/ASTForward.h b/libsolidity/ASTForward.h
index 396cf50a..02dd054a 100644
--- a/libsolidity/ASTForward.h
+++ b/libsolidity/ASTForward.h
@@ -69,6 +69,7 @@ class VariableDeclarationStatement;
 class ExpressionStatement;
 class Expression;
 class Assignment;
+class TupleExpression;
 class UnaryOperation;
 class BinaryOperation;
 class FunctionCall;