diff --git a/test/crypto/Makefile b/test/crypto/Makefile
index 25ae61868..6bb98f093 100644
--- a/test/crypto/Makefile
+++ b/test/crypto/Makefile
@@ -5,7 +5,7 @@ CC = g++
 BTSTACK_ROOT =  ../..
 
 CFLAGS  = -DUNIT_TEST -g
-CPPFLAGS =  -x c++ -Wall -Wno-unused -fno-exception
+CPPFLAGS =  -x c++ -Wall -Wno-unused -fno-exceptions
 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