diff --git a/examples/Makefile.am b/examples/Makefile.am
index 7cc7d24..7478350 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -36,6 +36,8 @@
 
 dist-hook:
 	rm -rf `find $(distdir) -name CVS -or -name .cvsignore`
+	rm -rf `find $(distdir) -name "*.core" -or -name ".tmp.*"`
+	rm -rf `find $(distdir) -name "*.[ch].??????"`
 
 CLEANFILES = $(ASN1_FILES_1) $(ASN1_FILES_2) $(ASN1_FILES_3)