2 files changed, 4 insertions, 2 deletions
diff --git a/include/cru/ui/mapper/Mapper.h b/include/cru/ui/mapper/Mapper.h
index f7467120..709288f5 100644
--- a/include/cru/ui/mapper/Mapper.h
+++ b/include/cru/ui/mapper/Mapper.h
@@ -41,14 +41,14 @@ class CRU_UI_API MapperBase : public Object {
   virtual bool XmlElementIsOfThisType(xml::XmlElementNode* node);
 
  protected:
-  void SetAllowedTags(std::vector<String> allowed_tags) {
+  void SetAllowedTags(std::vector<std::string> allowed_tags) {
     allowed_tags_ = std::move(allowed_tags);
   }
 
  private:
   std::type_index type_index_;
 
-  std::vector<String> allowed_tags_;
+  std::vector<std::string> allowed_tags_;
 };
 
 template <typename T>
diff --git a/include/cru/ui/mapper/StringMapper.h b/include/cru/ui/mapper/StringMapper.h
index bfb7314b..01f58c77 100644
--- a/include/cru/ui/mapper/StringMapper.h
+++ b/include/cru/ui/mapper/StringMapper.h
@@ -1,6 +1,8 @@
 #pragma once
 #include "Mapper.h"
 
+#include <cru/base/String.h>
+
 namespace cru::ui::mapper {
 class CRU_UI_API StringMapper : public BasicMapper<String> {
  public: