Index: configure.in
===================================================================
diff -u -r7d1e68dd44eb6cddb6755e335e1070bb7be2e6f8 -rc27616906b8caeb0fac615122f183e506131c38d
--- configure.in	(.../configure.in)	(revision 7d1e68dd44eb6cddb6755e335e1070bb7be2e6f8)
+++ configure.in	(.../configure.in)	(revision c27616906b8caeb0fac615122f183e506131c38d)
@@ -50,7 +50,7 @@
         [with_expat=$withval],[with_expat=bundle])
 AC_ARG_WITH(dtrace,
 	AC_HELP_STRING([--with-dtrace], [build nsf with dtrace (default: without)]),
-        [with_dtrace=$enableval], [with_dtrace=no])
+        [with_dtrace=$withval], [with_dtrace=no])
 AC_ARG_ENABLE(profile,
 	AC_HELP_STRING([--enable-profile], [build nsf with profile support (default: disabled)]),
         [enable_profile=$enableval], [enable_profile=no])