diff --git a/.gitignore b/.gitignore
index e4da33ec1c935bb3c14d40ad5fed8238c5d10244..811f0304a917002af42150c13435e221d36d2770 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@ lift-local.config
 *.fas 
 *.lib
 *.o
+*.*fsl
diff --git a/GNUmakefile b/GNUmakefile
index 03d202d00c63e8b658574651c39e4d47ae6db032..2043cf5d9319f12b1ea0f10f5bbf455e848f7f44 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -38,7 +38,7 @@ website-copy: FORCE
 	bin/rsync-cp.sh tmp/asdf.lisp $(webhome_private)
 
 clean_dirs = $(sourceDirectory)
-clean_extensions = fasl dfsl cfsl fasl fas lib dx32fsl
+clean_extensions = fasl dfsl cfsl fasl fas lib dx32fsl lx64fsl lx32fsl
 
 clean: FORCE
 	@for dir in $(clean_dirs); do \