1 files changed, 1 insertions, 0 deletions
diff --git a/BUILD b/BUILD
index c55e224..4b96c69 100644
--- a/BUILD
+++ b/BUILD
@@ -33,6 +33,7 @@ COPTS = CPPOPTS + [
     # copybara:strip_for_google3_begin
     "-pedantic",
     "-std=c89",
+    "-Wstrict-prototypes",
     # copybara:strip_end
 ]