diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
index 427355ebd..e482c5023 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
@@ -79,7 +79,7 @@ public synchronized void close() {
     fileSystemState.unregister(this);
   }
 
-  protected synchronized void checkOpen() {
+  synchronized void checkOpen() {
     if (!open) {
       throw new ClosedDirectoryStreamException();
     }
diff --git a/jimfs/src/main/java/com/google/common/jimfs/PathService.java b/jimfs/src/main/java/com/google/common/jimfs/PathService.java
index d2496df38..d177c017d 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/PathService.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/PathService.java
@@ -175,7 +175,7 @@ public JimfsPath createPath(@Nullable Name root, Iterable<Name> names) {
   }
 
   /** Returns a path with the given root (or no root, if null) and the given names. */
-  protected final JimfsPath createPathInternal(@Nullable Name root, Iterable<Name> names) {
+  final JimfsPath createPathInternal(@Nullable Name root, Iterable<Name> names) {
     return new JimfsPath(this, root, names);
   }
 
diff --git a/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java b/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
index 0a812d32e..ef0f9b638 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
@@ -55,7 +55,7 @@ public static Subject.Factory<PathSubject, Path> paths() {
   private static final LinkOption[] NOFOLLOW_LINKS = {LinkOption.NOFOLLOW_LINKS};
 
   private final Path actual;
-  protected LinkOption[] linkOptions = FOLLOW_LINKS;
+  LinkOption[] linkOptions = FOLLOW_LINKS;
   private Charset charset = UTF_8;
 
   private PathSubject(FailureMetadata failureMetadata, Path subject) {