diff --git a/gnoemoe/Makefile.am b/gnoemoe/Makefile.am
index 453189f..ea575d1 100644
--- a/gnoemoe/Makefile.am
+++ b/gnoemoe/Makefile.am
@@ -1,5 +1,7 @@
 ## Process this file with automake to produce Makefile.in
 # SUBDIRS = test
+
+CLEANFILES =
 INCLUDES = \
 	-DPACKAGE_DATA_DIR=\""$(datadir)"\" \
 	-DPACKAGE_LOCALE_DIR=\""$(prefix)/$(DATADIRNAME)/locale"\" \
@@ -7,7 +9,7 @@ INCLUDES = \
 	@RUBYINCLUDE@
 
 bin_PROGRAMS = gnoemoe
-BUILT_SOURCES =	  gm-marshal.c gm-marshal.h
+BUILT_SOURCES = gm-marshal.c gm-marshal.h
 
 gnoemoe_SOURCES = $(BUILT_SOURCES) \
 		gm-app.c gm-app.h  \
@@ -38,7 +40,7 @@ gm-marshal.c: gm-marshal.list $(GLIB_GENMARSHAL)
 
 gnoemoe_LDADD = @PACKAGE_LIBS@ $(INTLLIBS) @RUBYLINK@
 
-CLEANFILES = $(BUILT_SOURCES)
+CLEANFILES += $(BUILT_SOURCES)
 
 dist-hook:
 	cd $(distdir); rm -f $(BUILT_SOURCES)