diff --git a/core/src/main/java/tachiyomi/core/storage/UniFileExtensions.kt b/core/src/main/java/tachiyomi/core/storage/UniFileExtensions.kt
index c5c2bbbc8..65846ff6e 100644
--- a/core/src/main/java/tachiyomi/core/storage/UniFileExtensions.kt
+++ b/core/src/main/java/tachiyomi/core/storage/UniFileExtensions.kt
@@ -16,7 +16,7 @@ val UniFile.nameWithoutExtension: String?
 fun UniFile.toTempFile(context: Context): File {
     val inputStream = context.contentResolver.openInputStream(uri)!!
     val tempFile = File.createTempFile(
-        nameWithoutExtension.orEmpty(),
+        nameWithoutExtension.orEmpty().padEnd(3), // Prefix must be 3+ chars
         null,
     )
 
diff --git a/source-local/src/androidMain/kotlin/tachiyomi/source/local/image/LocalCoverManager.kt b/source-local/src/androidMain/kotlin/tachiyomi/source/local/image/LocalCoverManager.kt
index c78e28815..b50d74522 100644
--- a/source-local/src/androidMain/kotlin/tachiyomi/source/local/image/LocalCoverManager.kt
+++ b/source-local/src/androidMain/kotlin/tachiyomi/source/local/image/LocalCoverManager.kt
@@ -61,7 +61,7 @@ actual class LocalCoverManager(
             // SY -->
             if (encrypted) {
                 val tempFile = File.createTempFile(
-                    targetFile.nameWithoutExtension.orEmpty(),
+                    targetFile.nameWithoutExtension.orEmpty().padEnd(3), // Prefix must be 3+ chars
                     null,
                 )
                 val zip4j = ZipFile(tempFile)