diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp
index de30dcf79..669a7e4ab 100644
--- a/libsolidity/analysis/TypeChecker.cpp
+++ b/libsolidity/analysis/TypeChecker.cpp
@@ -495,7 +495,10 @@ void TypeChecker::visitManually(
 				break;
 			}
 	if (!parameters)
+	{
 		typeError(_modifier.location(), "Referenced declaration is neither modifier nor base class.");
+		return;
+	}
 	if (parameters->size() != arguments.size())
 		typeError(
 			_modifier.location(),