1 files changed, 1 insertions, 17 deletions
diff --git a/MLKInterpreter.m b/MLKInterpreter.m
index 730aaa9..e03df1d 100644
--- a/MLKInterpreter.m
+++ b/MLKInterpreter.m
@@ -29,6 +29,7 @@
 #import "MLKRoot.h"
 #import "MLKSymbol.h"
 #import "runtime-compatibility.h"
+#import "util.h"
 
 #import <Foundation/NSArray.h>
 #import <Foundation/NSException.h>
@@ -36,23 +37,6 @@
 #import <Foundation/NSString.h>
 
 
-static id nullify (id value)
-{
-  if (value)
-    return value;
-  else
-    return [NSNull null];
-}
-
-static id denullify (id value)
-{
-  if (value == [NSNull null])
-    return nil;
-  else
-    return value;
-}
-
-
 static MLKPackage *cl;
 static MLKPackage *sys;
 static MLKSymbol *IF;