diff --git a/interface/CMakeLists.txt b/interface/CMakeLists.txt
index b62a1a9..9dae7c8 100644
--- a/interface/CMakeLists.txt
+++ b/interface/CMakeLists.txt
@@ -52,6 +52,7 @@
         $<$<BOOL:${TFM_MULTI_CORE_TOPOLOGY}>:TFM_MULTI_CORE_TOPOLOGY>
         $<$<BOOL:${FORWARD_PROT_MSG}>:FORWARD_PROT_MSG=${FORWARD_PROT_MSG}>
         $<$<BOOL:${CONFIG_TFM_PARTITION_META}>:CONFIG_TFM_PARTITION_META>
+        $<$<BOOL:${CONFIG_TFM_DOORBELL_API}>:CONFIG_TFM_DOORBELL_API=1>
 )
 
 ###################### PSA api (S lib) #########################################