1 files changed, 2 insertions, 0 deletions
diff --git a/common.h b/common.h
index fed4dbd..26b371d 100644
--- a/common.h
+++ b/common.h
@@ -10,6 +10,8 @@
 	sleep_disable ();
 
 #define __unused__ __attribute__ ((unused))
+/* print assert messages */
+#define __ASSERT_USE_STDERR
 
 #endif /* COMMON_H */