diff --git a/libc/Android.mk b/libc/Android.mk
index cfc124c..af308cb 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -717,6 +717,8 @@
     -DTZDIR=\"/system/usr/share/zoneinfo\" \
     -DTM_GMTOFF=tm_gmtoff \
     -DUSG_COMPAT=1
+# tzcode currently relies on signed overflow in numerous places (http://b/10310929).
+LOCAL_CFLAGS += -fno-strict-overflow
 LOCAL_C_INCLUDES := $(libc_common_c_includes)
 LOCAL_MODULE := libc_tzcode
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk