diff --git a/CHANGELOG.md b/CHANGELOG.md
index 608459768..43a640a9e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ FEATURES:
 
 * **New Resource**: `opennebula_marketplace` (#414)
 * **New Data Source**: `opennebula_marketplace` (#414)
-* **New Resource**: `opennebula_marketplace_appliance` (#476, #518)
+* **New Resource**: `opennebula_marketplace_appliance` (#476, #518, #521)
 * **New Data Source**: `opennebula_marketplace_appliance` (#476)
 * resources/opennebula_virtual_router_nic: add floating IP allocation (#510)
 
diff --git a/opennebula/resource_opennebula_marketplace_app.go b/opennebula/resource_opennebula_marketplace_app.go
index d485c4ab2..05741cd27 100644
--- a/opennebula/resource_opennebula_marketplace_app.go
+++ b/opennebula/resource_opennebula_marketplace_app.go
@@ -555,7 +555,7 @@ func resourceOpennebulaMarketPlaceAppUpdate(ctx context.Context, d *schema.Resou
 	if d.HasChange("description") {
 		newTpl.Del(string(appk.Description))
 
-		description := d.Get("description").(int)
+		description := d.Get("description").(string)
 		newTpl.AddPair(string(appk.Description), description)
 
 		update = true
@@ -564,7 +564,7 @@ func resourceOpennebulaMarketPlaceAppUpdate(ctx context.Context, d *schema.Resou
 	if d.HasChange("publisher") {
 		newTpl.Del(string(appk.Publisher))
 
-		publisher := d.Get("publisher").(int)
+		publisher := d.Get("publisher").(string)
 		newTpl.AddPair(string(appk.Publisher), publisher)
 
 		update = true
@@ -573,7 +573,7 @@ func resourceOpennebulaMarketPlaceAppUpdate(ctx context.Context, d *schema.Resou
 	if d.HasChange("version") {
 		newTpl.Del(string(appk.Version))
 
-		version := d.Get("version").(int)
+		version := d.Get("version").(string)
 		newTpl.AddPair(string(appk.Version), version)
 
 		update = true
@@ -582,7 +582,7 @@ func resourceOpennebulaMarketPlaceAppUpdate(ctx context.Context, d *schema.Resou
 	if d.HasChange("vmtemplate64") {
 		newTpl.Del(string(appk.VMTemplate64))
 
-		vmTemplate := d.Get("vmtemplate64").(int)
+		vmTemplate := d.Get("vmtemplate64").(string)
 		newTpl.AddPair(string(appk.VMTemplate64), vmTemplate)
 
 		update = true
@@ -591,7 +591,7 @@ func resourceOpennebulaMarketPlaceAppUpdate(ctx context.Context, d *schema.Resou
 	if d.HasChange("apptemplate64") {
 		newTpl.Del(string(appk.AppTemplate64))
 
-		appTemplate := d.Get("apptemplate64").(int)
+		appTemplate := d.Get("apptemplate64").(string)
 		newTpl.AddPair(string(appk.AppTemplate64), appTemplate)
 
 		update = true