diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index 2e56756..c743077 100755
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -129,9 +129,11 @@
 
 backtrace_test_cflags_target := \
 	-DGTEST_OS_LINUX_ANDROID \
+	-DENABLE_PSS_TESTS \
 
 backtrace_test_src_files := \
 	backtrace_test.cpp \
+	GetPss.cpp \
 	thread_utils.c \
 
 backtrace_test_ldlibs := \