diff --git a/src/odbc/odbc.c b/src/odbc/odbc.c
index 4f10c7f..ff77030 100644
--- a/src/odbc/odbc.c
+++ b/src/odbc/odbc.c
@@ -839,7 +839,7 @@ SQLRETURN SQL_API SQLColAttributes(
 		{
 			const char *type_name = _odbc_get_client_type_name(col);
 			if (type_name)
-				snprintf(rgbDesc, cbDescMax, "%s", type_name);
+				*pcbDesc = snprintf(rgbDesc, cbDescMax, "%s", type_name);
 			break;
 		}
 		case SQL_COLUMN_LENGTH: