diff --git a/crypto-perf/Android.mk b/crypto-perf/Android.mk
index 291aca1..4a3cbe4 100644
--- a/crypto-perf/Android.mk
+++ b/crypto-perf/Android.mk
@@ -2,7 +2,7 @@
 ifeq ($(TARGET_ARCH),arm64)
 include $(CLEAR_VARS)
 
-LOCAL_CFLAGS := -O0 -march=armv8-a+crypto
+LOCAL_CFLAGS := -O0 -march=armv8-a+crypto -Wall -Werror
 LOCAL_SRC_FILES := crypto.cpp
 
 LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
diff --git a/crypto-perf/crypto.cpp b/crypto-perf/crypto.cpp
index 2cd2709..c186076 100644
--- a/crypto-perf/crypto.cpp
+++ b/crypto-perf/crypto.cpp
@@ -121,7 +121,7 @@
     CPU_SET(cmd_data.cpu_to_lock, &cpuset);
     if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) {
 	perror("sched_setaffinity failed");
-	return false;
+	return 1;
     }
     gettimeofday(&begin_time, NULL);
     while (count < MAX_COUNT) {