diff --git a/isis/src/base/objs/SpecialPixel/SpecialPixel.h b/isis/src/base/objs/SpecialPixel/SpecialPixel.h
index 3b39c4bd0ee02ab1bd0378efef445626119bba19..8210a68e2fc85bc325711a650d99954a59b92616 100644
--- a/isis/src/base/objs/SpecialPixel/SpecialPixel.h
+++ b/isis/src/base/objs/SpecialPixel/SpecialPixel.h
@@ -23,13 +23,10 @@
  */
 #include <vector>
 #include <cmath>
-#include <climits>
 #include <cfloat>
 #include <QString>
 #include <QStringList>
 
-
-
 #include "IException.h"
 #include "IString.h"
 
@@ -79,7 +76,6 @@ namespace Isis {
    *   @history 2016-04-20 Jeannie Backer - Added Janet Barret's changes
    *                           IVALID_MAX4 definition to handle SignedInteger
    *                           imports.
-   *   @history 2018-07-18 Tyler Wilson - Added 4-byte unsigned NULL.
    *
    *  @todo 2005-02-15 Kris Becker - finish class documentation
    *
@@ -148,12 +144,8 @@ namespace Isis {
   const float VALID_MIN4 = (*((const float *) &IVALID_MIN4));
 
   const int  INULL4 = 0xFF7FFFFB;
-  const unsigned int  UINULL4 = (unsigned int)INULL4;
-
   const float NULL4 = (*((const float *) &INULL4));
 
-
-
   const int  ILOW_REPR_SAT4 = 0xFF7FFFFC;
   const float LOW_REPR_SAT4 = (*((const float *) &ILOW_REPR_SAT4));