diff --git a/test/security_manager/rijndael.c b/test/rijndael/rijndael.c
similarity index 100%
rename from test/security_manager/rijndael.c
rename to test/rijndael/rijndael.c
diff --git a/test/security_manager/rijndael.h b/test/rijndael/rijndael.h
similarity index 100%
rename from test/security_manager/rijndael.h
rename to test/rijndael/rijndael.h
diff --git a/test/security_manager/Makefile b/test/security_manager/Makefile
index 7df018a28..a0fc457b1 100644
--- a/test/security_manager/Makefile
+++ b/test/security_manager/Makefile
@@ -9,12 +9,14 @@ CPPFLAGS =  -x c++ -Wall -Wno-unused
 CFLAGS += -I. -I.. -I${BTSTACK_ROOT}/src -I${BTSTACK_ROOT}/platform/posix
 CFLAGS += -I${BTSTACK_ROOT}/3rd-party/mbedtls/include
 CFLAGS += -I${BTSTACK_ROOT}/3rd-party/micro-ecc
+CFLAGS += -I${BTSTACK_ROOT}/test/rijndael
 LDFLAGS +=  -lCppUTest -lCppUTestExt
 
 VPATH += ${BTSTACK_ROOT}/src
 VPATH += ${BTSTACK_ROOT}/src/ble 
 VPATH += ${BTSTACK_ROOT}/platform/posix
 VPATH += ${BTSTACK_ROOT}/3rd-party/micro-ecc
+VPATH += ${BTSTACK_ROOT}/test/rijndael
 
 COMMON = \
     btstack_crypto.c    		\