diff --git a/build.py b/build.py
index 9e1c140..229c521 100644
--- a/build.py
+++ b/build.py
@@ -47,7 +47,7 @@ class Build(object):
             print("Got %s." % archive)
 
 
-    def build(self, outdir):
+    def build(self):
         """Building all the versions."""
         # We have 4 builds to do:
         # * standard languages, no help
@@ -56,11 +56,11 @@ class Build(object):
         # * all languages + offline help
 
         # Preparation tasks
-        appnamedir = os.path.join(self.__builddir__, self.__appname__)
-        appimagedir = os.path.join(self.__builddir__, self.__appname__, self.__appname__ + '.AppDir')
-        os.makedirs(appimagedir, exist_ok = True)
+        self.appnamedir = os.path.join(self.__builddir__, self.__appname__)
+        self.appimagedir = os.path.join(self.__builddir__, self.__appname__, self.__appname__ + '.AppDir')
+        os.makedirs(self.appimagedir, exist_ok = True)
         # And then cd to the appname folder.
-        os.chdir(appnamedir)
+        os.chdir(self.appnamedir)
         # Download appimagetool from github
         appimagetoolurl = "https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-{arch}.AppImage".format(arch = self.__arch__)
         urllib.request.urlretrieve(appimagetoolurl, 'appimagetool')
@@ -102,7 +102,7 @@ class Build(object):
         for archive in buildtarballs:
             subprocess.run("tar xzf ../%s" % archive, shell=True)
 
-        os.chdir(appimagedir)
+        os.chdir(self.appimagedir)
         # At this point, let's decompress the deb packages
         subprocess.run("find .. -iname '*.deb' -exec dpkg -x {} . \;", shell=True)
         # Changing desktop file
@@ -113,11 +113,11 @@ class Build(object):
         # Find the name of the binary called in the desktop file.
         binaryname = subprocess.check_output("awk 'BEGIN { FS = \"=\" } /^Exec/ { print $2; exit }' startcenter.desktop | awk '{ print $1 }'", shell=True).decode('utf-8').strip('\n')
 
-        bindir=os.path.join(self.__builddir__, self.__appname__, self.__appname__ + '.AppDir', 'usr', 'bin')
+        bindir=os.path.join(self.appimagedir, 'usr', 'bin')
         os.makedirs(bindir, exist_ok = True)
         os.chdir(bindir)
         subprocess.run("find ../../opt -name soffice -path '*programm*' -exec ln -s {} %s \;" % binaryname, shell=True)
-        os.chdir(appimagedir)
+        os.chdir(self.appimagedir)
 
         # Download AppRun from github
         apprunurl = "https://github.com/AppImage/AppImageKit/releases/download/continuous/AppRun-{arch}".format(arch = self.__arch__)
@@ -132,16 +132,28 @@ class Build(object):
         # Building app
         subprocess.run("VERSION={version} ./appimagetool -v ./{appname}.AppDir/".format(version = appversion, appname = self.__appname__), shell=True)
 
-        # Copying built image to final directory
-        subprocess.run("find . -iname '*.AppImage' -exec cp {} %s \;" % outdir, shell = True)
+        print("Built AppImage version {version}".format(version = appversion))
 
         # Cleanup phase, before new run.
-        os.chdir(appnamedir)
-        for deb in glob.glob(appnamedir + '/*.deb'):
+        os.chdir(self.appnamedir)
+        for deb in glob.glob(self.appnamedir + '/*.deb'):
             os.remove(deb)
-        shutil.rmtree(appimagedir)
-        os.makedirs(appimagedir)
+        shutil.rmtree(self.appimagedir)
+        os.makedirs(self.appimagedir)
 
+    def checksums(self):
+        """Create checksums of the built versions."""
+        os.chdir(self.appnamedir)
+        for appimage in glob.glob('*.AppImage'):
+            # See if a checksum already exist
+            if not os.path.exists(appimage + '.md5'):
+                subprocess.run("md5sum {appimage} > {appimage}.md5".format(appimage = appimage), shell=True)
+
+
+    def move(self, outdir):
+        """Moves built versions to definitive storage."""
+        os.chdir(self.appnamedir)
+        subprocess.run("find . -iname '*.AppImage*' -exec cp {} %s \;" % outdir, shell=True)
 
     def __del__(self):
         """Destructor"""
@@ -161,5 +173,6 @@ if __name__ == '__main__':
 
     b = Build(sys.argv[1], sys.argv[2], sys.argv[3])
     b.download()
-    b.build(sys.argv[4])
+    b.build()
+    b.checksums()
     del b