diff --git a/src/main/java/rife/bld/operations/JmodOptions.java b/src/main/java/rife/bld/operations/JmodOptions.java
index 81ed4c3..64469a5 100644
--- a/src/main/java/rife/bld/operations/JmodOptions.java
+++ b/src/main/java/rife/bld/operations/JmodOptions.java
@@ -47,6 +47,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param path the location
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions cmds(File path) {
         put("--cmds", path.getAbsolutePath());
         return this;
@@ -76,6 +77,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param compression the {@link ZipCompression compression} level
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions compress(ZipCompression compression) {
         put("--compress", compression.level);
         return this;
@@ -237,6 +239,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param path the location
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions headerFiles(File path) {
         put("--header-files", path.getAbsolutePath());
         return this;
@@ -270,6 +273,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param path the location
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions legalNotices(File path) {
         put("--legal-notices", path.getAbsolutePath());
         return this;
@@ -303,6 +307,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param path the location
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions libs(File path) {
         put("--libs", path.getAbsolutePath());
         return this;
@@ -347,6 +352,7 @@ public class JmodOptions extends HashMap<String, String> {
      * @param path the location
      * @return this map of options
      */
+    @SuppressWarnings("UnusedReturnValue")
     public JmodOptions manPages(File path) {
         put("--man-pages", path.getAbsolutePath());
         return this;
diff --git a/src/main/java/rife/bld/operations/JpackageOptions.java b/src/main/java/rife/bld/operations/JpackageOptions.java
index bc33f90..c802492 100644
--- a/src/main/java/rife/bld/operations/JpackageOptions.java
+++ b/src/main/java/rife/bld/operations/JpackageOptions.java
@@ -779,7 +779,7 @@ public class JpackageOptions extends HashMap<String, String> {
      */
     @SuppressWarnings("JavadocDeclaration")
     public JpackageOptions module(String name, String mainClass) {
-        put("--module-name", name + "/" + mainClass);
+        put("--module", name + "/" + mainClass);
         return this;
     }
 
diff --git a/src/test/java/rife/bld/operations/TestJpackageOperation.java b/src/test/java/rife/bld/operations/TestJpackageOperation.java
index 8dd5061..4d317ce 100644
--- a/src/test/java/rife/bld/operations/TestJpackageOperation.java
+++ b/src/test/java/rife/bld/operations/TestJpackageOperation.java
@@ -371,7 +371,7 @@ public class TestJpackageOperation {
         assertEquals("name", options.get("--module"));
 
         options.module("name", "class");
-        assertEquals("name:class", options.get("--module"));
+        assertEquals("name/class", options.get("--module"));
     }
 
     @Test