diff --git a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
index ff08ec066be3..cfba9d4aea43 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
@@ -649,7 +649,7 @@ public class FileTypeManagerImpl extends FileTypeManagerEx implements Persistent
   private volatile FileAttribute autoDetectedAttribute;
   // read auto-detection flags from the persistent FS file attributes. If file attributes are absent, return 0 for flags
   // returns three bits value for AUTO_DETECTED_AS_TEXT_MASK, AUTO_DETECTED_AS_BINARY_MASK and AUTO_DETECT_WAS_RUN_MASK bits
-  private byte readFlagsFromCache(@NotNull VirtualFile file) {
+  protected byte readFlagsFromCache(@NotNull VirtualFile file) {
     boolean wasAutoDetectRun = false;
     byte status = 0;
     try (DataInputStream stream = autoDetectedAttribute.readAttribute(file)) {
@@ -666,7 +666,7 @@ public class FileTypeManagerImpl extends FileTypeManagerEx implements Persistent
 
   // store auto-detection flags to the persistent FS file attributes
   // writes AUTO_DETECTED_AS_TEXT_MASK, AUTO_DETECTED_AS_BINARY_MASK bits only
-  private void writeFlagsToCache(@NotNull VirtualFile file, int flags) {
+  protected void writeFlagsToCache(@NotNull VirtualFile file, int flags) {
     try (DataOutputStream stream = autoDetectedAttribute.writeAttribute(file)) {
       stream.writeByte(flags & (AUTO_DETECTED_AS_TEXT_MASK | AUTO_DETECTED_AS_BINARY_MASK));
     }