diff --git a/include/authentication.hpp b/include/authentication.hpp
index 716b4bb..309c898 100644
--- a/include/authentication.hpp
+++ b/include/authentication.hpp
@@ -20,7 +20,7 @@
 namespace authentication
 {
 
-static void cleanupTempSession(const Request& req)
+inline void cleanupTempSession(const Request& req)
 {
     // TODO(ed) THis should really be handled by the persistent data
     // middleware, but because it is upstream, it doesn't have access to the