diff --git a/Makefile.pre.in b/Makefile.pre.in
index 0b4bb13..83fa48d 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -910,12 +910,12 @@
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
 		./$(BUILDPYTHON) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
-		-x 'bad_coding|badsyntax|site-packages|py2_test_grammar|crlf|different_encoding|' \
+		-x 'bad_coding|badsyntax|site-packages|py2_test_grammar|crlf|different_encoding' \
 		$(DESTDIR)$(LIBDEST)
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		./$(BUILDPYTHON) -Wi -O $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
-		-x 'bad_coding|badsyntax|site-packages|py2_test_grammar|crlf|different_encoding|' \
+		-x 'bad_coding|badsyntax|site-packages|py2_test_grammar|crlf|different_encoding' \
 		$(DESTDIR)$(LIBDEST)
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
 		./$(BUILDPYTHON) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \