diff --git a/frame/contracts/src/migration.rs b/frame/contracts/src/migration.rs
index ad85da0477148..ce0e018f0ac3d 100644
--- a/frame/contracts/src/migration.rs
+++ b/frame/contracts/src/migration.rs
@@ -186,7 +186,7 @@ pub trait MigrateSequence: private::Sealed {
 			return false
 		};
 
-		in_storage >= first_supported && target == high
+		in_storage == first_supported && target == high
 	}
 }
 
@@ -513,7 +513,7 @@ mod test {
 	fn is_upgrade_supported_works() {
 		type Migrations = (MockMigration<9>, MockMigration<10>, MockMigration<11>);
 
-		[(1, 1), (8, 11), (9, 11)].into_iter().for_each(|(from, to)| {
+		[(1, 1), (8, 11)].into_iter().for_each(|(from, to)| {
 			assert!(
 				Migrations::is_upgrade_supported(
 					StorageVersion::new(from),
@@ -525,7 +525,7 @@ mod test {
 			)
 		});
 
-		[(1, 0), (0, 3), (7, 11), (8, 10)].into_iter().for_each(|(from, to)| {
+		[(1, 0), (0, 3), (7, 11), (8, 10), (9, 11)].into_iter().for_each(|(from, to)| {
 			assert!(
 				!Migrations::is_upgrade_supported(
 					StorageVersion::new(from),