diff --git a/sequencer/src/genesis.rs b/sequencer/src/genesis.rs
index 08d0184df6..f809bc49b1 100644
--- a/sequencer/src/genesis.rs
+++ b/sequencer/src/genesis.rs
@@ -140,6 +140,12 @@ mod upgrade_serialization {
                             ))
                         }
                         (None, Some(v)) => {
+                            if v.start_proposing_view < v.stop_proposing_view {
+                                return Err(de::Error::custom(
+                                    "start_proposing_view is less than stop_proposing_view",
+                                ));
+                            }
+
                             map.insert(
                                 version,
                                 Upgrade {
@@ -149,6 +155,14 @@ mod upgrade_serialization {
                             );
                         }
                         (Some(t), None) => {
+                            if t.start_proposing_time.unix_timestamp()
+                                < t.stop_proposing_time.unix_timestamp()
+                            {
+                                return Err(de::Error::custom(
+                                    "start_proposing_time is less than stop_proposing_time",
+                                ));
+                            }
+
                             map.insert(
                                 version,
                                 Upgrade {
diff --git a/types/src/v0/v0_1/instance_state.rs b/types/src/v0/v0_1/instance_state.rs
index 7e52eac6c4..c54860474c 100644
--- a/types/src/v0/v0_1/instance_state.rs
+++ b/types/src/v0/v0_1/instance_state.rs
@@ -86,7 +86,7 @@ impl Upgrade {
                 config.start_proposing_time = t.start_proposing_time.unix_timestamp();
                 config.stop_proposing_time = t.stop_proposing_time.unix_timestamp();
                 config.start_voting_time = t.start_voting_time.unwrap_or_default().unix_timestamp();
-                // this should not panmic because Timestamp::max() constructs the maximum possible Unix timestamp
+                // this should not panic because Timestamp::max() constructs the maximum possible Unix timestamp
                 // using i64::MAX
                 config.stop_voting_time = t
                     .stop_voting_time