diff --git a/Makefile.am b/Makefile.am
index 23b16c1..3de35c8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,16 +10,17 @@ DIST_SUBDIRS = $(SUBDIRS) include scripts
 
 install-data-hook:
 	(cd $(DESTDIR)/$(sysconfdir)/$(PACKAGE) ; \
-	 chmod 600 chap-secrets pap-secrets eaptls-server eaptls-client)
+	 chmod 600 chap-secrets.example pap-secrets.example \
+	 eaptls-server.example eaptls-client.example)
 
 sampledir = $(sysconfdir)/$(PACKAGE)
 sample_DATA = \
-    etc.ppp/options \
-    etc.ppp/chap-secrets \
-    etc.ppp/pap-secrets \
-    etc.ppp/eaptls-server \
-    etc.ppp/eaptls-client \
-    etc.ppp/openssl.cnf
+    etc.ppp/options.example \
+    etc.ppp/chap-secrets.example \
+    etc.ppp/pap-secrets.example \
+    etc.ppp/eaptls-server.example \
+    etc.ppp/eaptls-client.example \
+    etc.ppp/openssl.cnf.example
 
 EXTRA_README = \
     Changes-2.3 \
diff --git a/etc.ppp/chap-secrets b/etc.ppp/chap-secrets.example
similarity index 100%
rename from etc.ppp/chap-secrets
rename to etc.ppp/chap-secrets.example
diff --git a/etc.ppp/eaptls-client b/etc.ppp/eaptls-client.example
similarity index 100%
rename from etc.ppp/eaptls-client
rename to etc.ppp/eaptls-client.example
diff --git a/etc.ppp/eaptls-server b/etc.ppp/eaptls-server.example
similarity index 100%
rename from etc.ppp/eaptls-server
rename to etc.ppp/eaptls-server.example
diff --git a/etc.ppp/openssl.cnf b/etc.ppp/openssl.cnf.example
similarity index 100%
rename from etc.ppp/openssl.cnf
rename to etc.ppp/openssl.cnf.example
diff --git a/etc.ppp/options b/etc.ppp/options.example
similarity index 100%
rename from etc.ppp/options
rename to etc.ppp/options.example
diff --git a/etc.ppp/pap-secrets b/etc.ppp/pap-secrets.example
similarity index 100%
rename from etc.ppp/pap-secrets
rename to etc.ppp/pap-secrets.example