diff --git a/linker/linker_config.h b/linker/linker_config.h
index 547c62e..75d9378 100644
--- a/linker/linker_config.h
+++ b/linker/linker_config.h
@@ -164,7 +164,7 @@
                                  const Config** config,
                                  std::string* error_msg);
 
-  static std::string get_vndk_version_string(const std::string& prefix);
+  static std::string get_vndk_version_string(const char delimiter);
  private:
   void clear();