diff --git a/plugins/ssh-base/crypto/chacha.c b/plugins/ssh-base/crypto/chacha.c
index 46d46cb81..7a8dfbb36 100644
--- a/plugins/ssh-base/crypto/chacha.c
+++ b/plugins/ssh-base/crypto/chacha.c
@@ -321,7 +321,7 @@ chachapoly_crypt(struct lws_ssh_keys *keys, u_int seqnr, u_char *dest,
                 const u_char *tag = src + aadlen + len;
 
                 poly1305_auth(expected_tag, src, aadlen + len, poly_key);
-                if (timingsafe_bcmp(expected_tag, tag, POLY1305_TAGLEN) != 0) {
+                if (lws_timingsafe_bcmp(expected_tag, tag, POLY1305_TAGLEN)) {
                         r = 2;
                         goto out;
                 }
diff --git a/plugins/ssh-base/include/lws-ssh.h b/plugins/ssh-base/include/lws-ssh.h
index c74c517d7..7259349a2 100644
--- a/plugins/ssh-base/include/lws-ssh.h
+++ b/plugins/ssh-base/include/lws-ssh.h
@@ -556,7 +556,7 @@ extern void
 explicit_bzero(void *p, size_t len);
 
 extern int
-timingsafe_bcmp(const void *a, const void *b, uint32_t len);
+lws_timingsafe_bcmp(const void *a, const void *b, uint32_t len);
 
 extern const char *lws_V_S;
 
diff --git a/plugins/ssh-base/sshd.c b/plugins/ssh-base/sshd.c
index 345e1b85a..bc9dfb1ab 100644
--- a/plugins/ssh-base/sshd.c
+++ b/plugins/ssh-base/sshd.c
@@ -96,7 +96,7 @@ explicit_bzero(void *p, size_t len)
 }
 
 int
-timingsafe_bcmp(const void *a, const void *b, uint32_t len)
+lws_timingsafe_bcmp(const void *a, const void *b, uint32_t len)
 {
 	const uint8_t *pa = a, *pb = b;
 	uint8_t sum = 0;