diff --git a/openflexure_microscope/api/static/src/components/tabContentComponents/captureComponents/paneCapture.vue b/openflexure_microscope/api/static/src/components/tabContentComponents/captureComponents/paneCapture.vue
index 1de921e0..1c3a0c85 100644
--- a/openflexure_microscope/api/static/src/components/tabContentComponents/captureComponents/paneCapture.vue
+++ b/openflexure_microscope/api/static/src/components/tabContentComponents/captureComponents/paneCapture.vue
@@ -155,7 +155,7 @@
                     v-model="scanStepSize.z"
                     class="uk-input uk-form-small"
                     type="number"
-                    name="inputPositionZx"
+                    name="inputPositionZ"
                   />
                 </div>
               </div>
@@ -172,6 +172,7 @@
                     class="uk-input uk-form-small"
                     type="number"
                     name="inputPositionX"
+                    min="1"
                   />
                 </div>
               </div>
@@ -186,6 +187,7 @@
                     class="uk-input uk-form-small"
                     type="number"
                     name="inputPositionY"
+                    min="1"
                   />
                 </div>
               </div>
@@ -199,7 +201,8 @@
                     v-model="scanSteps.z"
                     class="uk-input uk-form-small"
                     type="number"
-                    name="inputPositionZx"
+                    name="inputPositionZ"
+                    min="1"
                   />
                 </div>
               </div>