Use 3rdparty headers from the submodule
diff --git a/tests/Makefile b/tests/Makefile
index 3857778..1c7efe0 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -16,8 +16,9 @@
LOCAL_CFLAGS += -I../crypto/include
CRYPTO := ../crypto/library/
-include ../3rdparty/Makefile.inc
-LOCAL_CFLAGS+=$(THIRDPARTY_INCLUDES)
+INCLUDING_FROM_MBEDTLS:=1
+include ../crypto/3rdparty/Makefile.inc
+LOCAL_CFLAGS += $(patsubst -I../3rdparty/%, -I../crypto/3rdparty/%, $(THIRDPARTY_INCLUDES))
# Enable definition of various functions used throughout the testsuite
# (gethostname, strdup, fileno...) even when compiling with -std=c99. Harmless