diff --git a/runtime/gdev/tests/common/mod.rs b/runtime/gdev/tests/common/mod.rs
index 66b0a2da0cf6d37fca92fd8f199ab103af3e9d16..2ad0ff20597c85721fc5e01e47676a5fdbc15c53 100644
--- a/runtime/gdev/tests/common/mod.rs
+++ b/runtime/gdev/tests/common/mod.rs
@@ -141,6 +141,16 @@ impl ExtBuilder {
         self
     }*/
 
+    pub fn change_parameters<
+        F: Fn(&mut pallet_duniter_test_parameters::Parameters<u32, u32, Balance>) -> (),
+    >(
+        mut self,
+        f: F,
+    ) -> Self {
+        f(&mut self.parameters);
+        self
+    }
+
     pub fn build(self) -> sp_io::TestExternalities {
         let Self {
             initial_accounts,
diff --git a/runtime/gdev/tests/integration_tests.rs b/runtime/gdev/tests/integration_tests.rs
index acb895ca9081277b0e785680baea66f016558e98..b0525631426e8af64849354f58e5a3d75dd0af12 100644
--- a/runtime/gdev/tests/integration_tests.rs
+++ b/runtime/gdev/tests/integration_tests.rs
@@ -1227,3 +1227,14 @@ fn test_new_account_linked() {
         );
     })
 }
+#[test]
+fn smith_data_problem() {
+    ExtBuilder::new(1, 3, 4)
+        .change_parameters(|parameters| {
+            parameters.smith_cert_validity_period = 3;
+        })
+        .build()
+        .execute_with(|| {
+            run_to_block(4);
+        });
+}