diff --git a/configure.ac b/configure.ac
index 6f5a5b1e79fc658f5484144b869a49a8507730e9..ebd88558b5ee9bb4831bfe17c2d8522b8b3acdba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,18 +66,18 @@ else
 fi],
 [BITS=$(( ${ac_cv_sizeof_long} * 8 ))])
 
-dnl AC_CONFIG_COMMANDS([dof_stride_free_bit.h],
-dnl [: ${TMPDIR=/tmp}
-dnl TARGET_NEW=${TMPDIR}/dof_stride_free_bit.h
-dnl TARGET=alberta/src/Common/dof_stride_free_bit.h
-dnl ${SHELL} ${srcdir}/mkdoffreemasks.sh ${BITS} ${BITS} > ${TARGET_NEW}
-dnl if test -f ${TARGET} && cmp ${TARGET} ${TARGET_NEW} > /dev/null 2>&1 ; then
-dnl     AC_MSG_NOTICE([${TARGET} is unchanged])
-dnl else
-dnl     AC_MSG_NOTICE([Creating ${TARGET}])
-dnl     mv -f ${TARGET_NEW} ${TARGET}
-dnl fi],
-dnl [BITS=$(( ${ac_cv_sizeof_long} * 8 ))])
+AC_CONFIG_COMMANDS([dof_stride_free_bit.h],
+[: ${TMPDIR=/tmp}
+TARGET_NEW=${TMPDIR}/dof_stride_free_bit.h
+TARGET=alberta/src/Common/dof_stride_free_bit.h
+${SHELL} ${srcdir}/mkdoffreemasks.sh ${BITS} ${BITS} > ${TARGET_NEW}
+if test -f ${TARGET} && cmp ${TARGET} ${TARGET_NEW} > /dev/null 2>&1 ; then
+    AC_MSG_NOTICE([${TARGET} is unchanged])
+else
+    AC_MSG_NOTICE([Creating ${TARGET}])
+    mv -f ${TARGET_NEW} ${TARGET}
+fi],
+[BITS=$(( ${ac_cv_sizeof_long} * 8 ))])
 
 # Collect the demo programs
 DEMOSOURCES=