diff --git a/.changes/truncate-before-write-buildtask.md b/.changes/truncate-before-write-buildtask.md
new file mode 100644
index 000000000..0897545c0
--- /dev/null
+++ b/.changes/truncate-before-write-buildtask.md
@@ -0,0 +1,6 @@
+---
+"tauri-cli": patch:bug
+"@tauri-apps/cli": patch:bug
+---
+
+Fixes truncation of existing BuildTask.kt when running `tauri android init`.
diff --git a/tooling/cli/src/mobile/android/project.rs b/tooling/cli/src/mobile/android/project.rs
index 9c6029d3c..5110ee158 100644
--- a/tooling/cli/src/mobile/android/project.rs
+++ b/tooling/cli/src/mobile/android/project.rs
@@ -211,7 +211,9 @@ fn generate_out_file(
     options.mode(0o755);
   }
 
-  if path.file_name().unwrap() == OsStr::new("BuildTask.kt") || !path.exists() {
+  if path.file_name().unwrap() == OsStr::new("BuildTask.kt") {
+    options.truncate(true).create(true).open(path).map(Some)
+  } else if !path.exists() {
     options.create(true).open(path).map(Some)
   } else {
     Ok(None)
diff --git a/tooling/cli/src/mobile/ios/project.rs b/tooling/cli/src/mobile/ios/project.rs
index 1c6740a5b..8e702bafb 100644
--- a/tooling/cli/src/mobile/ios/project.rs
+++ b/tooling/cli/src/mobile/ios/project.rs
@@ -155,7 +155,7 @@ pub fn gen(
       let mut options = OpenOptions::new();
       options.write(true);
 
-      if path.file_name().unwrap() == OsStr::new("BuildTask.kt") || !path.exists() {
+      if !path.exists() {
         options.create(true).open(path).map(Some)
       } else {
         Ok(None)
diff --git a/tooling/cli/src/plugin/init.rs b/tooling/cli/src/plugin/init.rs
index 7f631c0ab..c4f23e4bf 100644
--- a/tooling/cli/src/plugin/init.rs
+++ b/tooling/cli/src/plugin/init.rs
@@ -274,7 +274,7 @@ pub fn generate_android_out_file(
     options.mode(0o755);
   }
 
-  if path.file_name().unwrap() == OsStr::new("BuildTask.kt") || !path.exists() {
+  if !path.exists() {
     options.create(true).open(path).map(Some)
   } else {
     Ok(None)