diff --git a/gpxsee.pro b/gpxsee.pro
index 21e92f54..27057a40 100644
--- a/gpxsee.pro
+++ b/gpxsee.pro
@@ -389,7 +389,8 @@ macx {
         icons/formats/slf.icns \
         icons/formats/json.icns \
         icons/formats/cup.icns \
-        icons/formats/gpi.icns
+        icons/formats/gpi.icns \
+        icons/formats/sml.icns
     QMAKE_BUNDLE_DATA += locale maps icons csv
 }
 
diff --git a/icons/formats/sml.icns b/icons/formats/sml.icns
new file mode 100644
index 00000000..7395976d
Binary files /dev/null and b/icons/formats/sml.icns differ
diff --git a/pkg/Info.plist b/pkg/Info.plist
index d74150f9..2b863724 100644
--- a/pkg/Info.plist
+++ b/pkg/Info.plist
@@ -243,6 +243,22 @@
 			<key>CFBundleTypeRole</key>
 			<string>Viewer</string>
 		</dict>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
+				<string>sml</string>
+			</array>
+			<key>CFBundleTypeMIMETypes</key>
+			<array>
+				<string>application/sml+xml</string>
+			</array>
+			<key>CFBundleTypeIconFile</key>
+			<string>icons/sml.icns</string>
+			<key>CFBundleTypeName</key>
+			<string>Suunto Markup Language</string>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+		</dict>
 	</array>
 
 	<key>UTImportedTypeDeclarations</key>
@@ -541,6 +557,27 @@
 				<string>application/vnd.garmin.gpi</string>
 			</dict>
 		</dict>
+		<dict>
+			<key>UTTypeIdentifier</key>
+			<string>com.suunto.sml</string>
+			<key>UTTypeReferenceURL</key>
+			<string>https://www.suunto.com</string>
+			<key>UTTypeDescription</key>
+			<string>Suunto Markup Language</string>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.xml</string>
+			</array>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<array>
+					<string>sml</string>
+				</array>
+				<key>public.mime-type</key>
+				<string>application/sml+xml</string>
+			</dict>
+		</dict>
 	</array>
 </dict>
 </plist>