diff --git a/src/main/java/com/glencoesoftware/bioformats2raw/Converter.java b/src/main/java/com/glencoesoftware/bioformats2raw/Converter.java
index c760bac..7a7fcd2 100644
--- a/src/main/java/com/glencoesoftware/bioformats2raw/Converter.java
+++ b/src/main/java/com/glencoesoftware/bioformats2raw/Converter.java
@@ -867,7 +867,7 @@ public void resetResolutions() {
   /**
    */
   public void resetSeriesList() {
-    seriesList.clear();
+    seriesList = new ArrayList<Integer>();
   }
 
   /**
@@ -927,7 +927,7 @@ public void resetCompression() {
   /**
    */
   public void resetCompressionProperties() {
-    compressionProperties.clear();
+    compressionProperties = new HashMap<String, Object>();
   }
 
   /**
@@ -1003,7 +1003,7 @@ public void resetFillValue() {
   /**
    */
   public void resetReaderOptions() {
-    readerOptions.clear();
+    readerOptions = new ArrayList<String>();
   }
 
   /**
@@ -1048,7 +1048,7 @@ public void resetDimensionOrder() {
    * @return path to input data
    */
   public String getInputPath() {
-    return inputPath.toString();
+    return inputPath == null ? null : inputPath.toString();
   }
 
   /**
diff --git a/src/test/java/com/glencoesoftware/bioformats2raw/test/ZarrTest.java b/src/test/java/com/glencoesoftware/bioformats2raw/test/ZarrTest.java
index 3acdb19..426bd62 100644
--- a/src/test/java/com/glencoesoftware/bioformats2raw/test/ZarrTest.java
+++ b/src/test/java/com/glencoesoftware/bioformats2raw/test/ZarrTest.java
@@ -1983,6 +1983,40 @@ public void testOptionsAPI() throws Exception {
     }
   }
 
+  /**
+   * Check that setting and resetting options via API will reset options to
+   * their default values.
+   */
+  @Test
+  public void testResetOptions() throws Exception {
+    input = fake("series", "2", "sizeX", "4096", "sizeY", "4096");
+
+    Converter apiConverter = new Converter();
+    apiConverter.setInputPath(input.toString());
+    apiConverter.setOutputPath(output.toString());
+    apiConverter.setSeriesList(Collections.singletonList(1));
+    apiConverter.setTileWidth(128);
+    apiConverter.setTileHeight(128);
+
+    assertEquals(apiConverter.getInputPath(), input.toString());
+    assertEquals(apiConverter.getOutputPath(), output.toString());
+    assertEquals(apiConverter.getSeriesList(), Collections.singletonList(1));
+    assertEquals(apiConverter.getTileWidth(), 128);
+    assertEquals(apiConverter.getTileHeight(), 128);
+
+    apiConverter.resetInputPath();
+    assertEquals(apiConverter.getInputPath(), null);
+
+    apiConverter.setInputPath(input.toString());
+
+    apiConverter.resetOptions();
+    assertEquals(apiConverter.getInputPath(), null);
+    assertEquals(apiConverter.getOutputPath(), null);
+    assertEquals(apiConverter.getSeriesList().size(), 0);
+    assertEquals(apiConverter.getTileWidth(), 1024);
+    assertEquals(apiConverter.getTileHeight(), 1024);
+  }
+
   /**
    * @param root dataset root path
    * @param rowCount total rows the plate could contain