diff --git a/ext/odbc/php_odbc.c b/ext/odbc/php_odbc.c
index 02b7887f489..99bd4e45613 100644
--- a/ext/odbc/php_odbc.c
+++ b/ext/odbc/php_odbc.c
@@ -2300,7 +2300,7 @@ void odbc_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
 	}
 
 	char *hashed_details;
-	size_t hashed_details_len = spprintf(&hashed_details, 0, "%d_%s_%s_%s_%s_%d", persistent, ODBC_TYPE, db, uid, pwd, cur_opt);
+	size_t hashed_details_len = spprintf(&hashed_details, 0, "odbc_%d_%s_%s_%s_%s_%d", persistent, ODBC_TYPE, db, uid, pwd, cur_opt);
 
 try_and_get_another_connection: