diff --git a/0001-Retter-klassenavn.patch b/0001-Retter-klassenavn.patch
new file mode 100644
index 0000000..a33b2a2
--- /dev/null
+++ b/0001-Retter-klassenavn.patch
@@ -0,0 +1,25 @@
+From 25049b7b2c58517bf2e2f37a66be4fe01e966b20 Mon Sep 17 00:00:00 2001
+From: Rafael Winterhalter <rafael.wth@gmail.com>
+Date: Fri, 23 Feb 2024 11:09:07 +0100
+Subject: [PATCH] Retter klassenavn.
+
+---
+ src/main/java/codes/rafael/modulemaker/AbstractModuleMojo.java | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/main/java/codes/rafael/modulemaker/AbstractModuleMojo.java b/src/main/java/codes/rafael/modulemaker/AbstractModuleMojo.java
+index 1d1f8c7..30bce10 100644
+--- a/src/main/java/codes/rafael/modulemaker/AbstractModuleMojo.java
++++ b/src/main/java/codes/rafael/modulemaker/AbstractModuleMojo.java
+@@ -218,7 +218,7 @@ public abstract class AbstractModuleMojo extends AbstractMojo {
+             }
+         }
+         if (mainClass != null) {
+-            moduleVisitor.visitMainClass(mainClass.trim());
++            moduleVisitor.visitMainClass(mainClass.trim().replace('.', '/'));
+         }
+         if (uses != null) {
+             Set<String> previousUses = new HashSet<String>();
+-- 
+2.47.0
+
diff --git a/modulemaker-maven-plugin.spec b/modulemaker-maven-plugin.spec
index a5258c2..68bc154 100644
--- a/modulemaker-maven-plugin.spec
+++ b/modulemaker-maven-plugin.spec
@@ -2,7 +2,7 @@
 
 Name:           modulemaker-maven-plugin
 Version:        1.9
-Release:        8%{?dist}
+Release:        9%{?dist}
 Summary:        A plugin for creating module-info.class files
 License:        Apache-2.0
 URL:            https://github.com/raphw/modulemaker-maven-plugin
@@ -12,6 +12,8 @@ ExclusiveArch:  %{java_arches} noarch
 Source0:        https://github.com/raphw/modulemaker-maven-plugin/archive/refs/tags/modulemaker-maven-plugin-%{version}.tar.gz
 Source1:        https://www.apache.org/licenses/LICENSE-2.0.txt
 
+Patch0:         0001-Retter-klassenavn.patch
+
 %if %{with bootstrap}
 BuildRequires:  javapackages-bootstrap
 %else
@@ -37,6 +39,7 @@ API documentation for %{name}.
 
 %prep
 %setup -q -n modulemaker-maven-plugin-modulemaker-maven-plugin-%{version}
+%patch0 -p1
 
 cp -p %{SOURCE1} .
 
@@ -56,6 +59,9 @@ cp -p %{SOURCE1} .
 %license LICENSE-2.0.txt
 
 %changelog
+* Wed Nov 13 2024 Mikolaj Izdebski <mizdebsk@redhat.com> - 1.9-9
+- Fix generated main-class module attributes
+
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 1.9-8
 - Bump release for October 2024 mass rebuild:
   Resolves: RHEL-64018