diff --git a/horizon/static/horizon/js/horizon.instances.js b/horizon/static/horizon/js/horizon.instances.js
index 43413661f8..73eaba92b1 100644
--- a/horizon/static/horizon/js/horizon.instances.js
+++ b/horizon/static/horizon/js/horizon.instances.js
@@ -212,16 +212,18 @@ horizon.addInitFunction(horizon.instances.init = function () {
    Update the device size value to reflect minimum allowed
    for selected image and flavor
    */
-  function update_device_size() {
+  function update_device_size(source_type) {
     var volume_size = horizon.Quota.getSelectedFlavor().disk;
-    var image = horizon.Quota.getSelectedImage();
     var size_field = $("#id_volume_size");
 
-    if (image !== undefined && image.min_disk > volume_size) {
-      volume_size = image.min_disk;
-    }
-    if (image !== undefined && image.size > volume_size) {
-      volume_size = image.size;
+    if (source_type === 'image') {
+      var image = horizon.Quota.getSelectedImageOrSnapshot(source_type);
+      if (image !== undefined && image.min_disk > volume_size) {
+        volume_size = image.min_disk;
+      }
+      if (image !== undefined && image.size > volume_size) {
+        volume_size = image.size;
+      }
     }
 
     // If the user has manually changed the volume size, do not override
@@ -246,7 +248,7 @@ horizon.addInitFunction(horizon.instances.init = function () {
   });
 
   $document.on('change', '.workflow #id_image_id', function () {
-    update_device_size();
+    update_device_size('image');
   });
 
   $document.on('input', '.workflow #id_volume_size', function () {
diff --git a/horizon/static/horizon/js/horizon.quota.js b/horizon/static/horizon/js/horizon.quota.js
index 6b41f9f920..a2402a4ef1 100644
--- a/horizon/static/horizon/js/horizon.quota.js
+++ b/horizon/static/horizon/js/horizon.quota.js
@@ -134,25 +134,25 @@ horizon.Quota = {
   },
 
   /*
-   Return an image Object based on which image ID is selected
+   Return an image/snapshot Object based on which image/snapshot ID is selected
    */
-  getSelectedImage: function() {
-    var selected = $('#id_image_id option:selected').val();
+  getSelectedImageOrSnapshot: function(source_type) {
+    var selected = $('#id_' + source_type + '_id option:selected').val();
     return horizon.Quota.findImageById(selected);
   },
 
   /*
-   Disable any flavors for a given image that do not meet
+   Disable any flavors for a given image/snapshot that do not meet
    its minimum RAM or disk requirements.
    */
-  disableFlavorsForImage: function(image) {
-    image = horizon.Quota.getSelectedImage();
+  disableFlavorsForImage: function(source_type) {
+    var source = horizon.Quota.getSelectedImageOrSnapshot(source_type);
     var to_disable = []; // an array of flavor names to disable
 
     horizon.Quota.resetFlavors(); // clear any previous messages
 
     $.each(horizon.Quota.flavors, function(i, flavor) {
-      if (!horizon.Quota.imageFitsFlavor(image, flavor)) {
+      if (!horizon.Quota.imageFitsFlavor(source, flavor)) {
         to_disable.push(flavor.name);
       }
     });
@@ -192,7 +192,7 @@ horizon.Quota = {
     this.disabledFlavorMessage = disabledMessage;
     this.allFlavorsDisabledMessage = allDisabledMessage;
     // Check if the image is pre-selected
-    horizon.Quota.disableFlavorsForImage();
+    horizon.Quota.disableFlavorsForImage('image');
   },
 
   /*
@@ -397,12 +397,17 @@ horizon.Quota = {
       };
 
       var imageChangeCallback = function() {
-        scope.disableFlavorsForImage();
+        scope.disableFlavorsForImage('image');
+      };
+
+      var snapshotChangeCallback = function() {
+        scope.disableFlavorsForImage('instance_snapshot');
       };
 
       $('#id_flavor').on('keyup change', eventCallback);
       $('#id_count').on('input', eventCallback);
       $('#id_image_id').on('change', imageChangeCallback);
+      $('#id_instance_snapshot_id').on('change', snapshotChangeCallback);
     }
 
     $(this.user_value_form_inputs).each(function(index, element) {
diff --git a/openstack_dashboard/dashboards/project/instances/templates/instances/_flavors_and_quotas.html b/openstack_dashboard/dashboards/project/instances/templates/instances/_flavors_and_quotas.html
index 186e556cd6..840524a537 100644
--- a/openstack_dashboard/dashboards/project/instances/templates/instances/_flavors_and_quotas.html
+++ b/openstack_dashboard/dashboards/project/instances/templates/instances/_flavors_and_quotas.html
@@ -75,8 +75,8 @@
 
 
 <script type="text/javascript" charset="utf-8">
-  some_disabled_msg = '{{_("Some flavors not meeting minimum image requirements have been disabled.")|escapejs }}';
-  all_disabled_msg = '{{_("No flavors meet minimum criteria for selected image.")|escapejs }}';
+  some_disabled_msg = '{{_("Some flavors not meeting minimum boot source requirements have been disabled.")|escapejs }}';
+  all_disabled_msg = '{{_("No flavors meet minimum criteria for selected boot source.")|escapejs }}';
 
   if(typeof horizon.Quota !== 'undefined') {
     horizon.Quota.initWithFlavors({{ flavors|safe|default:"{}" }});