diff --git a/native/bn_is_zero.c b/native/bn_is_zero.c
deleted file mode 100644
index b0a4300b..00000000
--- a/native/bn_is_zero.c
+++ /dev/null
@@ -1,4 +0,0 @@
-#include <openssl/bn.h>
-
-int bn_is_zero(BIGNUM *x) { return BN_is_zero(x); }
-
diff --git a/native/bn_is_zero.h b/native/bn_is_zero.h
deleted file mode 100644
index 8ec36c35..00000000
--- a/native/bn_is_zero.h
+++ /dev/null
@@ -1 +0,0 @@
-int bn_is_zero(BIGNUM *x);