diff --git a/tests/psa-client-server/psasim/Makefile b/tests/psa-client-server/psasim/Makefile
index 06d3059..093f3b9 100644
--- a/tests/psa-client-server/psasim/Makefile
+++ b/tests/psa-client-server/psasim/Makefile
@@ -10,7 +10,7 @@
 LIBPSASERVER := -Llibpsaserver/ -lmbedcrypto
 
 MBEDTLS_ROOT_PATH = ../../..
-COMMON_INCLUDE := -I./include -I$(MBEDTLS_ROOT_PATH)/include
+COMMON_INCLUDE := -I./include -I$(MBEDTLS_ROOT_PATH)/include -I$(MBEDTLS_ROOT_PATH)/tf-psa-crypto/include
 
 TEST_BIN = 	test/psa_client \
 			test/psa_partition