diff --git a/Makefile.in b/Makefile.in
index cec727b468..cc212b1c51 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,5 +1,3 @@
-# Auto-generated file -- DO NOT EDIT
-
 # Check if we want to show what we are doing
 ifdef VERBOSE
 	Q =
diff --git a/Makefile.lang.in b/Makefile.lang.in
index 11b12ddd24..18db5a6134 100644
--- a/Makefile.lang.in
+++ b/Makefile.lang.in
@@ -1,5 +1,3 @@
-# Auto-generated file -- DO NOT EDIT
-
 STRGEN       = !!STRGEN!!
 ENDIAN_CHECK = !!ENDIAN_CHECK!!
 SRC_DIR      = !!SRC_DIR!!
diff --git a/Makefile.src.in b/Makefile.src.in
index d2b83fcf8d..585a4cd457 100644
--- a/Makefile.src.in
+++ b/Makefile.src.in
@@ -1,5 +1,3 @@
-# Auto-generated file -- DO NOT EDIT
-
 CC_HOST      = !!CC_HOST!!
 CXX_HOST     = !!CXX_HOST!!
 CC_BUILD     = !!CC_BUILD!!
diff --git a/config.lib b/config.lib
index 3a2c068696..9d7006336d 100644
--- a/config.lib
+++ b/config.lib
@@ -2375,7 +2375,8 @@ generate_main() {
 
 	# Create the main Makefile
 	echo "Generating Makefile..."
-	< $ROOT_DIR/Makefile.in sed "$SRC_REPLACE" > Makefile
+	echo "# Auto-generated file from 'Makefile.in' -- DO NOT EDIT" > Makefile
+	< $ROOT_DIR/Makefile.in sed "$SRC_REPLACE" >> Makefile
 	cp $ROOT_DIR/Makefile.bundle.in Makefile.bundle
 	echo "# Auto-generated file -- DO NOT EDIT" > Makefile.am
 	echo >> Makefile.am
@@ -2401,7 +2402,8 @@ generate_lang() {
 	mkdir -p $LANG_OBJS_DIR
 
 	echo "Generating lang/Makefile..."
-	< $ROOT_DIR/Makefile.lang.in sed "$SRC_REPLACE" > $LANG_OBJS_DIR/Makefile
+	echo "# Auto-generated file from 'Makefile.lang.in' -- DO NOT EDIT" > $LANG_OBJS_DIR/Makefile
+	< $ROOT_DIR/Makefile.lang.in sed "$SRC_REPLACE" >> $LANG_OBJS_DIR/Makefile
 	echo "DIRS += $LANG_OBJS_DIR" >> Makefile.am
 	echo "LANG_DIRS += $LANG_OBJS_DIR" >> Makefile.am
 }
@@ -2415,7 +2417,8 @@ generate_src_normal() {
 	mkdir -p $SRC_OBJS_DIR
 
 	echo "Generating $2/Makefile..."
-	< $ROOT_DIR/Makefile.src.in sed "$SRC_REPLACE" > $SRC_OBJS_DIR/Makefile
+	echo "# Auto-generated file from 'Makefile.src.in' -- DO NOT EDIT" > $SRC_OBJS_DIR/Makefile
+	< $ROOT_DIR/Makefile.src.in sed "$SRC_REPLACE" >> $SRC_OBJS_DIR/Makefile
 	echo "DIRS += $SRC_OBJS_DIR" >> Makefile.am
 	echo "SRC_DIRS += $SRC_OBJS_DIR" >> Makefile.am
 }