diff --git a/build.gradle b/build.gradle
index be5bc28b1..ed3b6dd1f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -46,7 +46,7 @@ android {
     }
 
     defaultConfig {
-        applicationId 'de.dennisguse.opentracks'
+        applicationId 'de.dennisguse.opentracks.fork'
         versionCode 6751
         versionName "v4.28.3"
 
@@ -107,18 +107,18 @@ android {
     productFlavors {
         nightly {
             dimension 'version'
-            applicationId 'de.dennisguse.opentracks.nightly'
+            applicationId 'de.dennisguse.opentracks.fork.nightly'
 
             versionCode getVersionCodeNightly()
             versionName getVersionName()
-            base.archivesName = "de.dennisguse.opentracks.nightly_${getVersionCodeNightly()}"
+            base.archivesName = "de.dennisguse.opentracks.fork.nightly_${getVersionCodeNightly()}"
 
             signingConfig = signingConfigs.nightly
         }
         irreproducible {
             // Non-reproducible: https://f-droid.org/de/packages/de.dennisguse.opentracks/
             dimension 'version'
-            applicationId 'de.dennisguse.opentracks'
+            applicationId 'de.dennisguse.opentracks.fork'
             versionNameSuffix 'irreproducible'
         }
         reproducible {
@@ -126,9 +126,9 @@ android {
             // FDroid: https://f-droid.org/de/packages/de.dennisguse.opentracks.playstore
             // PlayStore: https://play.google.com/store/apps/details?id=de.dennisguse.opentracks.playstore
             dimension 'version'
-            applicationId 'de.dennisguse.opentracks.playstore'
+            applicationId 'de.dennisguse.opentracks.fork.playstore'
 
-            base.archivesName = "de.dennisguse.opentracks.playstore_${getVersionName()}_${android.defaultConfig.versionCode}"
+            base.archivesName = "de.dennisguse.opentracks.fork.playstore_${getVersionName()}_${android.defaultConfig.versionCode}"
 
             signingConfig = signingConfigs.release
         }
diff --git a/src/main/res/values/do_not_translate.xml b/src/main/res/values/do_not_translate.xml
index a8bd70cdf..93edfb5b7 100644
--- a/src/main/res/values/do_not_translate.xml
+++ b/src/main/res/values/do_not_translate.xml
@@ -15,8 +15,8 @@ limitations under the License.
 -->
 <resources>
     <string name="app_web_url" translatable="false">https://codeberg.org/OpenTracksApp/OpenTracks</string>
-    <string name="app_name" translatable="false">OpenTracks</string>
-    <string name="launcher_name" translatable="false">OpenTracks</string>
+    <string name="app_name" translatable="false">OpenTracks (Fork)</string>
+    <string name="launcher_name" translatable="false">OpenTracks (Fork)</string>
 
     <string name="egm2008" translatable="false">EGM2008</string>
     <string name="wgs84" translatable="false">WGS84</string>