diff --git a/src/scio_beast.hpp b/src/scio_beast.hpp
index c789968..1d4a0e8 100644
--- a/src/scio_beast.hpp
+++ b/src/scio_beast.hpp
@@ -85,12 +85,12 @@ namespace detail {
     };
 }   //  end detail ns
 
-const boost::system::error_category& get_scio_error_category() {
+inline const boost::system::error_category& get_scio_error_category() {
     static detail::scio_error_category instance;
     return instance;
 }
 
-boost::system::error_code make_error_code(errors e) {
+inline boost::system::error_code make_error_code(errors e) {
     return boost::system::error_code(static_cast<int>(e), get_scio_error_category());
 }
 
@@ -389,8 +389,8 @@ class SCChannel {
         return std::get<HandlerId>(m_eventTable).connect(std::forward<Args>(args)...);
     }
 
-    void unsubscribe();
-    void destroy();
+    inline void unsubscribe();
+    inline void destroy();
 
     ChannelState getState() const { return m_state; }
 
@@ -1600,4 +1600,4 @@ class SocketClusterClient
 
 }   //  end scio_beast ns
 
-#endif  //  SOCKETCLUSTER_IO_BEAST_H
\ No newline at end of file
+#endif  //  SOCKETCLUSTER_IO_BEAST_H