diff --git a/Source/charon/states/state.h b/Source/charon/states/state.h
index 2e5df9c80..a7c6826c5 100644
--- a/Source/charon/states/state.h
+++ b/Source/charon/states/state.h
@@ -68,6 +68,11 @@ enum ike_sa_state_e {
 	IKE_SA_ESTABLISHED = 6
 };
 
+/**
+ * string mappings for ike_sa_state_t
+ */
+extern mapping_t ike_sa_state_m[];
+
 /**
  * @brief This interface represents an IKE_SA state
  *