diff --git a/ConfigRegression.cmake b/ConfigRegression.cmake
index 7fdeb93..af0eb9c 100644
--- a/ConfigRegression.cmake
+++ b/ConfigRegression.cmake
@@ -28,6 +28,7 @@
 #definitions) based on these.
 set (REGRESSION True)
 set (CORE_TEST False)
+set (CORE_IPC False)
 set (PSA_API_TEST False)
 
 # TF-M isolation level: 1..3