diff --git a/cde/programs/dthelp/parser/canon1/eltdef/Makefile.am b/cde/programs/dthelp/parser/canon1/eltdef/Makefile.am
index 9d0453243..315309c96 100644
--- a/cde/programs/dthelp/parser/canon1/eltdef/Makefile.am
+++ b/cde/programs/dthelp/parser/canon1/eltdef/Makefile.am
@@ -1,5 +1,7 @@
 MAINTAINERCLEANFILES = Makefile.in
 
+.NOTPARALLEL:
+
 noinst_PROGRAMS = eltdef
 
 HELPTAG       = ..