diff --git a/app/src/main/java/com/aurora/store/data/installer/RootInstaller.kt b/app/src/main/java/com/aurora/store/data/installer/RootInstaller.kt
index 89ef8bf6a..5ed191c6c 100644
--- a/app/src/main/java/com/aurora/store/data/installer/RootInstaller.kt
+++ b/app/src/main/java/com/aurora/store/data/installer/RootInstaller.kt
@@ -102,8 +102,8 @@ class RootInstaller(context: Context) : InstallerBase(context) {
         val found = sessionIdMatcher.find()
 
         if (found) {
-            val sessionId = sessionIdMatcher.group(1).toInt()
-            if (Shell.getShell().isRoot) {
+            val sessionId = sessionIdMatcher.group(1)?.toInt()
+            if (Shell.getShell().isRoot && sessionId != null) {
                 for (file in files) {
                     Shell.su("cat \"${file.absoluteFile}\" | pm install-write -S ${file.length()} $sessionId \"${file.name}\"")
                         .exec()
@@ -149,4 +149,4 @@ class RootInstaller(context: Context) : InstallerBase(context) {
     private fun parseError(result: Shell.Result): String {
         return result.err.joinToString(separator = "\n")
     }
-}
\ No newline at end of file
+}