diff --git a/KeywordSearch/src/org/sleuthkit/autopsy/keywordsearch/AbstractFileChunk.java b/KeywordSearch/src/org/sleuthkit/autopsy/keywordsearch/AbstractFileChunk.java
index dcb81eafd0..87df3dd612 100644
--- a/KeywordSearch/src/org/sleuthkit/autopsy/keywordsearch/AbstractFileChunk.java
+++ b/KeywordSearch/src/org/sleuthkit/autopsy/keywordsearch/AbstractFileChunk.java
@@ -69,7 +69,7 @@ class AbstractFileChunk {
     // Given a byte array, filter out all occurances non-characters 
     // http://unicode.org/cldr/utility/list-unicodeset.jsp?a=[:Noncharacter_Code_Point=True:]
     // and non-printable control characters except tabulator, new line and carriage return
-    // and replace them with the question mark character (?)
+    // and replace them with the character (^)
     private static byte[] sanitize(byte[] input) {
         Charset charset = Charset.forName("UTF-8"); // NON-NLS
         String inputString = new String(input, charset);
@@ -80,7 +80,7 @@ class AbstractFileChunk {
             if (charIsValidSolrUTF8(ch)) {
                 sanitized.append(ch);
             } else {
-                sanitized.append("?"); // NON-NLS
+                sanitized.append('^'); // NON-NLS
             }
         }