diff --git a/doc/Makefile.in b/doc/Makefile.in
index 4fb3809ce..fd09054d0 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -67,8 +67,8 @@ all: $(DEVDOCS) $(DOCS)
 
 .SUFFIXES: .man
 
-varsub: $(top_srcdir)/configure.in
-	printf 's#@%s@#1#\ns#@%s@#1#\ns#@%s@#1#\ns#@%s@#/etc#g\ns#@%s@#/usr/local#g\ns#@%s@#4#g\ns#@%s@#1m#g\n' SEMAN BAMAN LCMAN sysconfdir prefix mansectform mansectsu > $@; sed -n '/Begin initial values for man page substitution/,/End initial values for man page substitution/{;p;}' $(top_srcdir)/configure.in | sed -e '/^#/d' -e 's/^/s#@/' -e 's/=[\\"]*/@#/' -e 's/[\\"]*$$/#g/' >> $@
+@DEV@varsub: $(top_srcdir)/configure.in
+@DEV@	printf 's#@%s@#1#\ns#@%s@#1#\ns#@%s@#1#\ns#@%s@#/etc#g\ns#@%s@#/usr/local#g\ns#@%s@#4#g\ns#@%s@#1m#g\n' SEMAN BAMAN LCMAN sysconfdir prefix mansectform mansectsu > $@; sed -n '/Begin initial values for man page substitution/,/End initial values for man page substitution/{;p;}' $(top_srcdir)/configure.in | sed -e '/^#/d' -e 's/^/s#@/' -e 's/=[\\"]*/@#/' -e 's/[\\"]*$$/#g/' >> $@
 
 @DEV@$(srcdir)/sudo.man.in: $(srcdir)/sudo.pod
 @DEV@	mansectsu=`echo @MANSECTSU@|tr A-Z a-z`; mansectform=`echo @MANSECTFORM@|tr A-Z a-z`; sed -n -e '/^=pod/q' -e 's/^/.\\" /p' $(srcdir)/sudo.pod > $@; pod2man --quotes=none --date="`date '+%B %e, %Y'`" --section=$$mansectsu --release=$(VERSION) --center="MAINTENANCE COMMANDS" $(srcdir)/sudo.pod | sed -e "s/(5)/($$mansectform)/g" -e "s/(8)/($$mansectsu)/g" | perl -p $(srcdir)/sudo.man.pl >> $@