diff --git a/examples/sample.source.LDAP3/Makefile b/examples/sample.source.LDAP3/Makefile
index 6f3c8cd..7fae0bd 100644
--- a/examples/sample.source.LDAP3/Makefile
+++ b/examples/sample.source.LDAP3/Makefile
@@ -210,6 +210,7 @@
 	@echo ================
 
 distclean: clean
-	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
+	rm -f $(ASN_MODULE_SOURCES)
+	rm -f $(ASN_MODULE_HEADERS)
 	rm -f $(ASN_CONVERTER_SOURCES) $(ASN_CONVERTER_HEADERS)
 	rm -f Makefile.am.sample
diff --git a/examples/sample.source.MEGACO/Makefile b/examples/sample.source.MEGACO/Makefile
index d8a930c..21009c4 100644
--- a/examples/sample.source.MEGACO/Makefile
+++ b/examples/sample.source.MEGACO/Makefile
@@ -332,6 +332,7 @@
 	@echo ================
 
 distclean: clean
-	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
+	rm -f $(ASN_MODULE_SOURCES)
+	rm -f $(ASN_MODULE_HEADERS)
 	rm -f $(ASN_CONVERTER_SOURCES) $(ASN_CONVERTER_HEADERS)
 	rm -f Makefile.am.sample
diff --git a/examples/sample.source.MHEG5/Makefile b/examples/sample.source.MHEG5/Makefile
index b07656a..cd3e0b6 100644
--- a/examples/sample.source.MHEG5/Makefile
+++ b/examples/sample.source.MHEG5/Makefile
@@ -500,6 +500,7 @@
 	@echo ================
 
 distclean: clean
-	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
+	rm -f $(ASN_MODULE_SOURCES)
+	rm -f $(ASN_MODULE_HEADERS)
 	rm -f $(ASN_CONVERTER_SOURCES) $(ASN_CONVERTER_HEADERS)
 	rm -f Makefile.am.sample
diff --git a/examples/sample.source.PKIX1/Makefile b/examples/sample.source.PKIX1/Makefile
index 8f902b2..2038796 100644
--- a/examples/sample.source.PKIX1/Makefile
+++ b/examples/sample.source.PKIX1/Makefile
@@ -392,6 +392,7 @@
 	@echo ================
 
 distclean: clean
-	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
+	rm -f $(ASN_MODULE_SOURCES)
+	rm -f $(ASN_MODULE_HEADERS)
 	rm -f $(ASN_CONVERTER_SOURCES) $(ASN_CONVERTER_HEADERS)
 	rm -f Makefile.am.sample
diff --git a/examples/sample.source.TAP3/Makefile b/examples/sample.source.TAP3/Makefile
index 3dfb47f..65e4a53 100644
--- a/examples/sample.source.TAP3/Makefile
+++ b/examples/sample.source.TAP3/Makefile
@@ -726,6 +726,7 @@
 	@echo ================
 
 distclean: clean
-	rm -f $(ASN_MODULE_SOURCES) $(ASN_MODULE_HEADERS)
+	rm -f $(ASN_MODULE_SOURCES)
+	rm -f $(ASN_MODULE_HEADERS)
 	rm -f $(ASN_CONVERTER_SOURCES) $(ASN_CONVERTER_HEADERS)
 	rm -f Makefile.am.sample