diff --git a/cde/programs/dtksh/Makefile.am b/cde/programs/dtksh/Makefile.am
index 9a52eea70..7cc303ae3 100644
--- a/cde/programs/dtksh/Makefile.am
+++ b/cde/programs/dtksh/Makefile.am
@@ -1,5 +1,8 @@
 MAINTAINERCLEANFILES = Makefile.in
 
+# Can't build multi-core in here yet.
+.NOTPARALLEL:
+
 CLEANFILES = init.c FEATURE
 
 SUBDIRS = examples