diff --git a/include/webassets.hpp b/include/webassets.hpp
index 54d3c98..7e382d8 100644
--- a/include/webassets.hpp
+++ b/include/webassets.hpp
@@ -27,7 +27,7 @@
     }
 };
 
-void requestRoutes(App& app)
+inline void requestRoutes(App& app)
 {
     const static boost::container::flat_map<const char*, const char*, CmpStr>
         contentTypes{