diff --git a/src/smt/params/smt_params_helper.pyg b/src/smt/params/smt_params_helper.pyg
index 56d393d41..c1cdd1dfa 100644
--- a/src/smt/params/smt_params_helper.pyg
+++ b/src/smt/params/smt_params_helper.pyg
@@ -15,7 +15,7 @@ def_module_params(module_name='smt',
                           ('delay_units_threshold', UINT, 32, 'maximum number of learned unit clauses before restarting, ingored if delay_units is false'),
                           ('pull_nested_quantifiers', BOOL, False, 'pull nested quantifiers'),
                           ('refine_inj_axioms', BOOL, True, 'refine injectivity axioms'),
-                          ('timeout', UINT, 0, 'timeout (0 means no timeout)'),
+                          ('timeout', UINT, 0, 'timeout (in milliseconds) (0 means no timeout)'),
 	                  ('rlimit', UINT, 0, 'resource limit (0 means no limit)'),
                           ('max_conflicts', UINT, UINT_MAX, 'maximum number of conflicts before giving up.'),
                           ('mbqi', BOOL, True, 'model based quantifier instantiation (MBQI)'),