1 files changed, 1 insertions, 0 deletions
diff --git a/ASTForward.h b/ASTForward.h
index c960fc8f..da0a8812 100644
--- a/ASTForward.h
+++ b/ASTForward.h
@@ -38,6 +38,7 @@ class SourceUnit;
 class ImportDirective;
 class Declaration;
 class ContractDefinition;
+class InheritanceSpecifier;
 class StructDefinition;
 class ParameterList;
 class FunctionDefinition;