1 files changed, 3 insertions, 1 deletions
diff --git a/include/cru/parse/Symbol.hpp b/include/cru/parse/Symbol.hpp
index e22fb9bc..7404a5e7 100644
--- a/include/cru/parse/Symbol.hpp
+++ b/include/cru/parse/Symbol.hpp
@@ -1,11 +1,13 @@
 #pragma once
+#include "Base.hpp"
+
 #include "cru/common/String.hpp"
 
 namespace cru::parse {
 class Grammar;
 
 // Base class of Terminal and Nonterminal.
-class Symbol : public Object {
+class CRU_PARSE_API Symbol : public Object {
  public:
   explicit Symbol(Grammar* grammar, String name);