diff --git a/services/preview/storage/mgmt/2018-03-01-preview/storage/blobcontainers.go b/services/preview/storage/mgmt/2018-03-01-preview/storage/blobcontainers.go
index 65bb736331bf..e89cba030e5d 100644
--- a/services/preview/storage/mgmt/2018-03-01-preview/storage/blobcontainers.go
+++ b/services/preview/storage/mgmt/2018-03-01-preview/storage/blobcontainers.go
@@ -594,7 +594,7 @@ func (client BlobContainersClient) DeleteImmutabilityPolicyResponder(resp *http.
 // ifMatch - the entity state (ETag) version of the immutability policy to update. A value of "*" can be used
 // to apply the operation only if the immutability policy already exists. If omitted, this operation will
 // always be applied.
-// parameters - the ImmutabilityPolicy Properties that will be extented for a blob container.
+// parameters - the ImmutabilityPolicy Properties that will be extended for a blob container.
 func (client BlobContainersClient) ExtendImmutabilityPolicy(ctx context.Context, resourceGroupName string, accountName string, containerName string, ifMatch string, parameters *ImmutabilityPolicy) (result ImmutabilityPolicy, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/BlobContainersClient.ExtendImmutabilityPolicy")
diff --git a/services/storage/mgmt/2018-02-01/storage/blobcontainers.go b/services/storage/mgmt/2018-02-01/storage/blobcontainers.go
index a75b23ab5fc3..03098697cfae 100644
--- a/services/storage/mgmt/2018-02-01/storage/blobcontainers.go
+++ b/services/storage/mgmt/2018-02-01/storage/blobcontainers.go
@@ -594,7 +594,7 @@ func (client BlobContainersClient) DeleteImmutabilityPolicyResponder(resp *http.
 // ifMatch - the entity state (ETag) version of the immutability policy to update. A value of "*" can be used
 // to apply the operation only if the immutability policy already exists. If omitted, this operation will
 // always be applied.
-// parameters - the ImmutabilityPolicy Properties that will be extented for a blob container.
+// parameters - the ImmutabilityPolicy Properties that will be extended for a blob container.
 func (client BlobContainersClient) ExtendImmutabilityPolicy(ctx context.Context, resourceGroupName string, accountName string, containerName string, ifMatch string, parameters *ImmutabilityPolicy) (result ImmutabilityPolicy, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/BlobContainersClient.ExtendImmutabilityPolicy")
diff --git a/services/storage/mgmt/2018-07-01/storage/blobcontainers.go b/services/storage/mgmt/2018-07-01/storage/blobcontainers.go
index f56b70f6d1e1..d46d4342a7c6 100644
--- a/services/storage/mgmt/2018-07-01/storage/blobcontainers.go
+++ b/services/storage/mgmt/2018-07-01/storage/blobcontainers.go
@@ -594,7 +594,7 @@ func (client BlobContainersClient) DeleteImmutabilityPolicyResponder(resp *http.
 // ifMatch - the entity state (ETag) version of the immutability policy to update. A value of "*" can be used
 // to apply the operation only if the immutability policy already exists. If omitted, this operation will
 // always be applied.
-// parameters - the ImmutabilityPolicy Properties that will be extented for a blob container.
+// parameters - the ImmutabilityPolicy Properties that will be extended for a blob container.
 func (client BlobContainersClient) ExtendImmutabilityPolicy(ctx context.Context, resourceGroupName string, accountName string, containerName string, ifMatch string, parameters *ImmutabilityPolicy) (result ImmutabilityPolicy, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/BlobContainersClient.ExtendImmutabilityPolicy")