diff --git a/tools/Android.mk b/tools/Android.mk
index 4a19b6c2..5bda4897 100644
--- a/tools/Android.mk
+++ b/tools/Android.mk
@@ -40,7 +40,7 @@ define add_tool
 
     LOCAL_CFLAGS += -DHAVE_TERMIOS_H
     LOCAL_CFLAGS += -DHAVE_STRUCT_SYSINFO_TOTALRAM
-    LOCAL_CFLAGS += -DANDROID
+    LOCAL_CFLAGS += -DANDROID -UNDEBUG
     LOCAL_CFLAGS += -std=c99
     # FIXME: drop once Bionic correctly annotates "noreturn" on pthread_exit
     LOCAL_CFLAGS += -Wno-error=return-type