diff --git a/src/main/java/qupath/ext/instanseg/ui/InstanSegController.java b/src/main/java/qupath/ext/instanseg/ui/InstanSegController.java
index e737fd7..8b4e866 100644
--- a/src/main/java/qupath/ext/instanseg/ui/InstanSegController.java
+++ b/src/main/java/qupath/ext/instanseg/ui/InstanSegController.java
@@ -23,6 +23,7 @@
 import javafx.scene.control.SpinnerValueFactory;
 import javafx.scene.control.TextField;
 import javafx.scene.control.ToggleButton;
+import javafx.scene.input.MouseEvent;
 import javafx.scene.layout.BorderPane;
 import org.controlsfx.control.CheckComboBox;
 import org.controlsfx.control.SearchableComboBox;
@@ -30,10 +31,12 @@
 import org.slf4j.LoggerFactory;
 import qupath.ext.instanseg.core.InstanSegModel;
 import qupath.ext.instanseg.core.InstanSegTask;
+import qupath.fx.dialogs.FileChoosers;
 import qupath.fx.utils.FXUtils;
 import qupath.lib.common.ThreadTools;
 import qupath.lib.display.ChannelDisplayInfo;
 import qupath.lib.gui.QuPathGUI;
+import qupath.lib.gui.tools.GuiTools;
 import qupath.lib.images.ImageData;
 import qupath.lib.images.servers.ColorTransforms;
 import qupath.lib.images.servers.ImageServer;
@@ -43,6 +46,7 @@
 import qupath.lib.scripting.QP;
 
 import java.awt.image.BufferedImage;
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.FileSystems;
 import java.nio.file.Files;
@@ -204,7 +208,6 @@ private static Collection<String> getAvailableUniqueChannelNames(ImageServer<?>
     }
 
 
-
     private static String getTitle(CheckComboBox<ColorTransforms.ColorTransform> comboBox) {
         int n = comboBox.getCheckModel().getCheckedItems().size();
         if (n == 0)
@@ -298,7 +301,6 @@ private void configureDeviceChoices() {
         // changed elsewhere
         deviceChoices.getSelectionModel().selectedItemProperty().addListener(
                 (value, oldValue, newValue) -> InstanSegPreferences.preferredDeviceProperty().set(newValue));
-
     }
 
     private void configureMessageLabel() {
@@ -317,7 +319,6 @@ private void configureMessageLabel() {
         });
     }
 
-
     static void addModelsFromPath(String dir, ComboBox<InstanSegModel> box) {
         if (dir == null || dir.isEmpty()) return;
         box.getItems().clear();
@@ -650,5 +651,44 @@ private void updateSelectedObjectCounts() {
 
     }
 
+    /**
+     * Open the model directory in the system file browser when double-clicked.
+     * @param event
+     */
+    @FXML
+    public void handleModelDirectoryLabelClick(MouseEvent event) {
+        if (event.getClickCount() != 2)
+            return;
+        var path = InstanSegPreferences.modelDirectoryProperty().get();
+        if (path == null || path.isEmpty())
+            return;
+        var file = new File(path);
+        if (file.exists())
+            GuiTools.browseDirectory(file);
+        else
+            logger.debug("Can't browse directory for {}", file);
+    }
+
+    @FXML
+    public void promptForModelDirectory() {
+        promptToUpdateDirectory(InstanSegPreferences.modelDirectoryProperty());
+    }
 
+    private void promptToUpdateDirectory(StringProperty dirPath) {
+        var modelDirPath = dirPath.get();
+        var dir = modelDirPath == null || modelDirPath.isEmpty() ? null : new File(modelDirPath);
+        if (dir != null) {
+            if (dir.isFile())
+                dir = dir.getParentFile();
+            else if (!dir.exists())
+                dir = null;
+        }
+        var newDir = FileChoosers.promptForDirectory(
+                FXUtils.getWindow(tfModelDirectory), // Get window from any node here
+                resources.getString("ui.model-directory.choose-directory"),
+                dir);
+        if (newDir == null)
+            return;
+        dirPath.set(newDir.getAbsolutePath());
+    }
 }
diff --git a/src/main/resources/qupath/ext/instanseg/ui/instanseg_control.fxml b/src/main/resources/qupath/ext/instanseg/ui/instanseg_control.fxml
index c0c2429..a22bd0c 100644
--- a/src/main/resources/qupath/ext/instanseg/ui/instanseg_control.fxml
+++ b/src/main/resources/qupath/ext/instanseg/ui/instanseg_control.fxml
@@ -136,7 +136,7 @@
         <!--            Model Directory Selection-->
                         <VBox alignment="CENTER" styleClass="standard-vertical-spacing">
                             <children>
-                                <Label styleClass="regular" text="%ui.options.directory" />
+                                <Label onMouseClicked="#handleModelDirectoryLabelClick" styleClass="regular" text="%ui.options.directory" />
                                 <HBox styleClass="standard-spacing">
                                     <children>
                                         <TextField fx:id="tfModelDirectory" HBox.hgrow="ALWAYS">
@@ -144,7 +144,7 @@
                                                 <Tooltip text="%ui.options.directory.tooltip" />
                                             </tooltip>
                                         </TextField>
-                                        <Button fx:id="modelDirButton" mnemonicParsing="false">
+                                        <Button fx:id="modelDirButton" mnemonicParsing="false" onAction="#promptForModelDirectory">
                                             <tooltip>
                                                 <Tooltip text="%ui.options.directory.tooltip" />
                                             </tooltip>