diff --git a/api/src/org/labkey/api/util/FileUtil.java b/api/src/org/labkey/api/util/FileUtil.java
index e56a9b50827..88753e6b1f2 100644
--- a/api/src/org/labkey/api/util/FileUtil.java
+++ b/api/src/org/labkey/api/util/FileUtil.java
@@ -111,7 +111,6 @@ public static void startRequest()
         tempPaths.get().clear();
     }
 
-
     @SuppressWarnings("RedundantOperationOnEmptyContainer")
     public static void stopRequest()
     {
@@ -1484,7 +1483,7 @@ public static void copyData(InputStream is, DataOutput os) throws IOException
             os.write(buf,0,r);
     }
 
-
+    // NOTE: Keep in sync with the copied constants in TestFileUtils
     private static final char[] ILLEGAL_CHARS = {'/','\\',':','?','<','>','*','|','"','^', '\n', '\r', '\''};
     public static final String ILLEGAL_CHARS_STRING = new String(ILLEGAL_CHARS);
 
@@ -1499,7 +1498,7 @@ public static boolean isLegalName(String name)
         return !StringUtils.containsAny(name, ILLEGAL_CHARS);
     }
 
-
+    // NOTE: Keep in sync with the copied implementation in TestFileUtils.makeLegalFileName()
     public static String makeLegalName(String name)
     {
         if (name == null)