diff --git a/iceoryx_posh/include/iceoryx_posh/internal/popo/wait_set.inl b/iceoryx_posh/include/iceoryx_posh/internal/popo/wait_set.inl
index bf7843e185..1e01fc7084 100644
--- a/iceoryx_posh/include/iceoryx_posh/internal/popo/wait_set.inl
+++ b/iceoryx_posh/include/iceoryx_posh/internal/popo/wait_set.inl
@@ -17,6 +17,8 @@
 #ifndef IOX_POSH_POPO_WAIT_SET_INL
 #define IOX_POSH_POPO_WAIT_SET_INL
 
+#include "iceoryx_posh/popo/wait_set.hpp"
+
 namespace iox
 {
 namespace popo