diff --git a/basis/compression/lzw/lzw.factor b/basis/compression/lzw/lzw.factor
old mode 100644
new mode 100755
index 340e455291..f61a02c01b
--- a/basis/compression/lzw/lzw.factor
+++ b/basis/compression/lzw/lzw.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2009 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors combinators io kernel math namespaces
-prettyprint sequences vectors ;
+sequences vectors ;
 QUALIFIED-WITH: bitstreams bs
 IN: compression.lzw
 
diff --git a/basis/images/ppm/ppm.factor b/basis/images/ppm/ppm.factor
old mode 100644
new mode 100755
index d50d51797d..9610189094
--- a/basis/images/ppm/ppm.factor
+++ b/basis/images/ppm/ppm.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors ascii combinators images images.loader io
 io.encodings.ascii io.encodings.string kernel locals make math
-math.parser prettyprint sequences ;
+math.parser sequences ;
 IN: images.ppm
 
 SINGLETON: ppm-image
diff --git a/basis/images/tiff/tiff.factor b/basis/images/tiff/tiff.factor
old mode 100644
new mode 100755
index 4a82545d79..a1880a3d3c
--- a/basis/images/tiff/tiff.factor
+++ b/basis/images/tiff/tiff.factor
@@ -4,7 +4,7 @@ USING: accessors arrays assocs byte-arrays classes combinators
 compression.lzw endian fry grouping images io
 io.binary io.encodings.ascii io.encodings.binary
 io.encodings.string io.encodings.utf8 io.files kernel math
-math.bitwise math.order math.parser pack prettyprint sequences
+math.bitwise math.order math.parser pack sequences
 strings math.vectors specialized-arrays locals
 images.loader ;
 FROM: alien.c-types => float ;