diff --git a/legacy/eet/src/Makefile.am b/legacy/eet/src/Makefile.am
index 7b45af65b2..a8590b2f0d 100644
--- a/legacy/eet/src/Makefile.am
+++ b/legacy/eet/src/Makefile.am
@@ -1,3 +1,3 @@
-## Process this file with automake to produce Makefile.in
+MAINTAINERCLEANFILES = Makefile.in
 
 SUBDIRS = lib bin
diff --git a/legacy/eet/src/bin/Makefile.am b/legacy/eet/src/bin/Makefile.am
index 591a433f15..3e8351c404 100644
--- a/legacy/eet/src/bin/Makefile.am
+++ b/legacy/eet/src/bin/Makefile.am
@@ -1,4 +1,4 @@
-## Process this file with automake to produce Makefile.in
+MAINTAINERCLEANFILES = Makefile.in
 
 INCLUDES = -I$(top_srcdir)/src/lib