diff --git a/crypto/buf/buf.c b/crypto/buf/buf.c
index 5addc79e..6b871e21 100644
--- a/crypto/buf/buf.c
+++ b/crypto/buf/buf.c
@@ -86,7 +86,7 @@ void BUF_MEM_free(BUF_MEM *buf) {
   OPENSSL_free(buf);
 }
 
-static int buf_mem_reserve(BUF_MEM *buf, size_t cap, int clean) {
+int BUF_MEM_reserve(BUF_MEM *buf, size_t cap) {
   if (buf->max >= cap) {
     return 1;
   }
@@ -116,12 +116,8 @@ static int buf_mem_reserve(BUF_MEM *buf, size_t cap, int clean) {
   return 1;
 }
 
-int BUF_MEM_reserve(BUF_MEM *buf, size_t cap) {
-  return buf_mem_reserve(buf, cap, 0 /* don't clear old buffer contents. */);
-}
-
-static size_t buf_mem_grow(BUF_MEM *buf, size_t len, int clean) {
-  if (!buf_mem_reserve(buf, len, clean)) {
+size_t BUF_MEM_grow(BUF_MEM *buf, size_t len) {
+  if (!BUF_MEM_reserve(buf, len)) {
     return 0;
   }
   if (buf->length < len) {
@@ -131,12 +127,8 @@ static size_t buf_mem_grow(BUF_MEM *buf, size_t len, int clean) {
   return len;
 }
 
-size_t BUF_MEM_grow(BUF_MEM *buf, size_t len) {
-  return buf_mem_grow(buf, len, 0 /* don't clear old buffer contents. */);
-}
-
 size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len) {
-  return buf_mem_grow(buf, len, 1 /* clear old buffer contents. */);
+  return BUF_MEM_grow(buf, len);
 }
 
 char *BUF_strdup(const char *str) {
diff --git a/include/openssl/buf.h b/include/openssl/buf.h
index d4c3e221..c4d0bc76 100644
--- a/include/openssl/buf.h
+++ b/include/openssl/buf.h
@@ -89,8 +89,8 @@ OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap);
 // zeros. It returns the length of |buf|, or zero if there's an error.
 OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
 
-// BUF_MEM_grow_clean acts the same as |BUF_MEM_grow|, but clears the previous
-// contents of memory if reallocing.
+// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory
+// allocated memory on free.
 OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
 
 // BUF_strdup returns an allocated, duplicate of |str|.