diff --git a/ext/standard/crypt.c b/ext/standard/crypt.c
index 14eb6cda973..54687f6cdf3 100644
--- a/ext/standard/crypt.c
+++ b/ext/standard/crypt.c
@@ -177,7 +177,19 @@ PHPAPI zend_string *php_crypt(const char *password, const int pass_len, const ch
 
 	if (!crypt_res || (salt[0] == '*' && salt[1] == '0')) {
 		return NULL;
-	} else {
+	}
+	else if (!strcmp(crypt_res, "*")) {
+		/* Musl crypt() uses "*" as a failure token rather
+		 * than the "*0" that libxcrypt/PHP use. Our test
+		 * suite in particular looks for "*0" in a few places,
+		 * and it would be annoying to handle both values
+		 * explicitly. It seems wise to abstract this detail
+		 * from the end user: if it's annoying for us, imagine
+		 * how annoying it would be in end-user code; not that
+		 * anyone would think of it. */
+		return NULL;
+	}
+	else {
 		result = zend_string_init(crypt_res, strlen(crypt_res), 0);
 		return result;
 	}