diff --git a/openbsd-compat/bsd-getentropy.c b/openbsd-compat/bsd-getentropy.c
index 554dfad70..0231e066c 100644
--- a/openbsd-compat/bsd-getentropy.c
+++ b/openbsd-compat/bsd-getentropy.c
@@ -51,7 +51,7 @@ _ssh_compat_getentropy(void *s, size_t len)
 	size_t o = 0;
 
 #ifdef HAVE_GETENTROPY
-	if (r = getentropy(s, len) == 0)
+	if ((r = getentropy(s, len)) == 0)
 		return 0;
 #endif /* HAVE_GETENTROPY */
 #ifdef HAVE_GETRANDOM