diff --git a/Makefile b/Makefile
index 1338966..5563ca7 100644
--- a/Makefile
+++ b/Makefile
@@ -104,29 +104,29 @@ bin/retro-repl: interfaces/repl.c interfaces/image.c
 	cd interfaces && $(CC) $(CFLAGS) $(LDFLAGS) -o ../bin/retro-repl repl.c
 
 bin/retro-ri: interfaces/ri.c interfaces/image.c interfaces/io_filesystem.c interfaces/io_filesystem.forth interfaces/io_floatingpoint.c interfaces/io_floatingpoint.forth
-	cp ngaImage cleanImage
-	./bin/retro-extend interfaces/io_filesystem.forth
-	./bin/retro-extend interfaces/io_floatingpoint.forth
-	./bin/retro-embedimage >interfaces/ri_image.c
-	mv cleanImage ngaImage
+	cp ngaImage ri.image
+	./bin/retro-extend ri.image interfaces/io_filesystem.forth
+	./bin/retro-extend ri.image interfaces/io_floatingpoint.forth
+	./bin/retro-embedimage ri.image >interfaces/ri_image.c
+	rm ri.image
 	cd interfaces && $(CC) $(CFLAGS) $(LDFLAGS) -o ../bin/retro-ri $(LIBCURSES) $(LIBM) io_filesystem.c io_floatingpoint.c ri.c
 
 bin/retro: bin/retro-embedimage bin/retro-extend interfaces/image.c interfaces/rre.c interfaces/rre.forth interfaces/io_filesystem.c interfaces/io_filesystem.forth interfaces/io_gopher.c interfaces/io_gopher.forth interfaces/io_floatingpoint.c interfaces/io_floatingpoint.forth interfaces/io_unix_syscalls.c interfaces/io_unix_syscalls.forth
-	cp ngaImage cleanImage
-	./bin/retro-extend interfaces/io_filesystem.forth
-	./bin/retro-extend interfaces/io_gopher.forth
-	./bin/retro-extend interfaces/io_floatingpoint.forth
-	./bin/retro-extend interfaces/io_unix_syscalls.forth
-	./bin/retro-extend interfaces/rre.forth
-	./bin/retro-embedimage >interfaces/rre_image.c
-	mv cleanImage ngaImage
+	cp ngaImage rre.image
+	./bin/retro-extend rre.image interfaces/io_filesystem.forth
+	./bin/retro-extend rre.image interfaces/io_gopher.forth
+	./bin/retro-extend rre.image interfaces/io_floatingpoint.forth
+	./bin/retro-extend rre.image interfaces/io_unix_syscalls.forth
+	./bin/retro-extend rre.image interfaces/rre.forth
+	./bin/retro-embedimage rre.image >interfaces/rre_image.c
+	rm rre.image
 	cd interfaces && $(CC) $(CFLAGS) $(LDFLAGS) -o ../bin/retro $(LIBM) io_filesystem.c io_gopher.c io_floatingpoint.c io_unix_syscalls.c rre.c
 
 bin/retro-barebones: bin/retro-embedimage bin/retro-extend interfaces/image.c interfaces/barebones.c interfaces/barebones.forth
-	cp ngaImage cleanImage
-	./bin/retro-extend interfaces/barebones.forth
-	./bin/retro-embedimage >interfaces/barebones_image.c
-	mv cleanImage ngaImage
+	cp ngaImage barebones.image
+	./bin/retro-extend barebones.image interfaces/barebones.forth
+	./bin/retro-embedimage barebones.image >interfaces/barebones_image.c
+	rm barebones.image
 	cd interfaces && $(CC) $(CFLAGS) $(LDFLAGS) -o ../bin/retro-barebones barebones.c
 
 bin/retro-unu: tools/unu.c
@@ -139,5 +139,5 @@ doc/Glossary.txt: bin/retro words.tsv
 
 interfaces/image.c: bin/retro-embedimage bin/retro-extend bin/retro-muri literate/RetroForth.md literate/Rx.md
 	./bin/retro-muri literate/Rx.md
-	./bin/retro-extend literate/RetroForth.md
-	./bin/retro-embedimage > interfaces/image.c
+	./bin/retro-extend ngaImage literate/RetroForth.md
+	./bin/retro-embedimage ngaImage > interfaces/image.c
diff --git a/README.md b/README.md
index 648f1db..0b66176 100644
--- a/README.md
+++ b/README.md
@@ -25,11 +25,7 @@ errors by doing:
     make -kis
 
 If you are building an an older Linux system and are running
-into problems, try using the `build.sh` script:
-
-    sh build.sh
-
-Or the alternate `Makefile.linux`:
+into problems, try using the alternative Makefile:
 
     make -f Makefile.linux
 
@@ -53,10 +49,6 @@ floating point math support.
 The `retro` executable can handle a variety of command line
 arguments:
 
-    retro
-
-Starts the *listener*, a basic REPL for interactive use.
-
     retro -i
 
 Starts the *listener*, a basic REPL for interactive use.
diff --git a/tools/extend.c b/tools/extend.c
index 2b903fb..613f051 100644
--- a/tools/extend.c
+++ b/tools/extend.c
@@ -150,14 +150,14 @@ int main(int argc, char **argv) {
   ngaPrepare();
   max_sp = 0;
   max_rsp = 0;
-  ngaLoadImage("ngaImage");
+  ngaLoadImage(argv[1]);
   stats();
   dump_stack();
   printf("-> Process code from %s\n", argv[1]);
-  tokens = include_file(argv[1]);
+  tokens = include_file(argv[2]);
   printf("   %d tokens\n", tokens);
   stats();
-  if ((fp = fopen("ngaImage", "wb")) == NULL) {
+  if ((fp = fopen(argv[1], "wb")) == NULL) {
     printf("Unable to save the ngaImage!\n");
     exit(2);
   }