--- a/ExternalBytes.st	Thu Mar 10 08:13:13 2016 +0000
+++ b/ExternalBytes.st	Fri Mar 11 10:06:30 2016 +0000
@@ -1314,7 +1314,7 @@
     unsigned int size = __intVal(__INST(size));
     unsigned char *endP;
 
-    if (cp == nil || size == 0) {
+    if (cp == NULL || size == 0) {
 	RETURN(false);
     }