diff --git a/img-ui/src/main/kotlin/dev/nuculabs/imagetagger/ui/MainPageController.kt b/img-ui/src/main/kotlin/dev/nuculabs/imagetagger/ui/MainPageController.kt
index dcd6280..a3c8cf4 100644
--- a/img-ui/src/main/kotlin/dev/nuculabs/imagetagger/ui/MainPageController.kt
+++ b/img-ui/src/main/kotlin/dev/nuculabs/imagetagger/ui/MainPageController.kt
@@ -67,6 +67,9 @@ class MainPageController {
     @FXML
     private lateinit var cancelButton: Button
 
+    @FXML
+    lateinit var tagImagesButton: Button
+
     /**
      * Initializes the controller. Needs to be called after the dependencies have been injected.
      */
@@ -83,7 +86,10 @@ class MainPageController {
         synchronized(this) {
             val fileChooser = FileChooser().apply { title = "Choose images" }
             val filePaths = fileChooser.showOpenMultipleDialog(null) ?: return
-
+            if (tagImagesButton.isDisable) {
+                return
+            }
+            tagImagesButton.isDisable = true
             isCurrentTagsOperationCancelled = false
             progressBar.isVisible = true
             cancelButton.isVisible = true
@@ -167,6 +173,7 @@ class MainPageController {
             if (processedImageFilesCount.get() == imageFilesTotal) {
                 progressBar.isVisible = false
                 cancelButton.isVisible = false
+                tagImagesButton.isDisable = false
                 logger.info("Finished processing images.")
             }
         }
diff --git a/img-ui/src/main/resources/dev/nuculabs/imagetagger/ui/main-window-view.fxml b/img-ui/src/main/resources/dev/nuculabs/imagetagger/ui/main-window-view.fxml
index 74b1975..6e451a8 100644
--- a/img-ui/src/main/resources/dev/nuculabs/imagetagger/ui/main-window-view.fxml
+++ b/img-ui/src/main/resources/dev/nuculabs/imagetagger/ui/main-window-view.fxml
@@ -19,7 +19,7 @@
                 <padding>
                     <Insets bottom="5" left="5" right="5"/>
                 </padding>
-                <Button onAction="#onTagImagesButtonClick" text="Tag Images">
+                <Button fx:id="tagImagesButton" onAction="#onTagImagesButtonClick" text="Tag Images">
                     <graphic>
                         <FontIcon iconLiteral="far-images" iconSize="16"/>
                     </graphic>