diff --git a/interface/include/tfm_api.h b/interface/include/tfm_api.h
index fea137a..5194c2a 100644
--- a/interface/include/tfm_api.h
+++ b/interface/include/tfm_api.h
@@ -14,6 +14,8 @@
 
 #include <stdint.h>
 
+#include "psa_client.h"
+
 #define TFM_INVALID_CLIENT_ID 0
 
 /**