diff --git a/config/Substfiles.am b/config/Substfiles.am
index 38e870b2f501..809eaef2330a 100644
--- a/config/Substfiles.am
+++ b/config/Substfiles.am
@@ -43,4 +43,4 @@ SUBSTFILES =
 CLEANFILES += $(SUBSTFILES)
 dist_noinst_DATA += $(SUBSTFILES:=.in)
 
-$(call SUBST,%,)
+$(SUBSTFILES): $(call SUBST,%,)
diff --git a/man/Makefile.am b/man/Makefile.am
index 45156571eec3..7fe2dd04814f 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -119,7 +119,7 @@ nodist_man_MANS = \
 
 dist_noinst_DATA += $(dist_noinst_man_MANS) $(dist_man_MANS)
 
-SUBSTFILES += $(nodist_man_MANS)
+SUBSTFILES += $(nodist_man_MANS) %D%/man8/zfs_prepare_disk.8
 
 CHECKS += mancheck
 mancheck: