diff --git a/build-macosx.sh b/build-macosx.sh
index 4e471da..d126d8c 100755
--- a/build-macosx.sh
+++ b/build-macosx.sh
@@ -1,11 +1,10 @@
 #!/usr/bin/env bash
-# Untested yet
 rm $(find . -name "*.qmlc")
 rm $(find . -name "*.pyc")
 python3 -m pip install -U pyinstaller
-iconutil -c icns "mac/logarithmplotter.iconset"
 pyinstaller --add-data "LogarithmPlotter/qml:qml" \
             --add-data "LICENSE.md:." \
+            --add-data "mac/logarithmplotterfile.icns:." \
             --add-data "README.md:." \
             --exclude-module "FixTk" \
             --exclude-module "tcl" \
@@ -19,3 +18,5 @@ pyinstaller --add-data "LogarithmPlotter/qml:qml" \
             --osx-bundle-identifier eu.ad5001.logarithmplotter \
             -n LogarithmPlotter \
             LogarithmPlotter/__init__.py 
+
+cp mac/Info.plist dist/LogarithmPlotter.app/Contents/Info.plist
diff --git a/mac/Info.plist b/mac/Info.plist
index 03c2d9e..5b8f033 100644
--- a/mac/Info.plist
+++ b/mac/Info.plist
@@ -17,8 +17,49 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.0.0</string>
+	<string>0.0.1</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
+	<key>UTExportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeIdentifier</key>
+			<string>eu.ad5001.x-logarithm-plotter</string>
+			<key>UTTypeReferenceURL</key>
+			<string>https://git.ad5001.eu/Ad5001/LogarithmicPlotter/wiki/LogarithmPlotter-file-format-v1.0</string>
+			<key>UTTypeDescription</key>
+			<string>Logarithm Plot File</string>
+			<key>UTTypeIconFile</key>
+			<string>logarithmplotterfile.icns</string>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.text</string>
+			</array>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<array>
+					<string>lpf</string>
+					<string>lgg</string>
+				</array>
+			</dict>
+		</dict>
+	</array>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleTypeIconFile</key>
+			<string>logarithmplotterfile.icns</string>
+			<key>CFBundleTypeName</key>
+			<string>Logarithm Plot File</string>
+			<key>LSHandlerRank</key>
+			<string>Owner</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>eu.ad5001.x-logarithm-plotter</string>
+			</array>
+		</dict>
+	</array>
 </dict>
 </plist>