diff --git a/ext/oci8/oci8.c b/ext/oci8/oci8.c
index c42c3a8e367..cf9f77f7127 100644
--- a/ext/oci8/oci8.c
+++ b/ext/oci8/oci8.c
@@ -992,7 +992,7 @@ php_oci_connection *php_oci_do_connect_ex(char *username, int username_len, char
 
 #if HAVE_OCI_ENV_NLS_CREATE
 	if (charset && *charset) {
-		smart_str_appends_ex(&hashed_details, charset, 1);
+		smart_str_appends_ex(&hashed_details, charset, 0);
 	}
 	else {
 		size_t rsize = 0;