diff --git a/unmaintained/size-of/size-of.factor b/unmaintained/size-of/size-of.factor
deleted file mode 100644
index 8157ba7dcf..0000000000
--- a/unmaintained/size-of/size-of.factor
+++ /dev/null
@@ -1,39 +0,0 @@
-
-USING: kernel namespaces sequences
-       io io.files io.launcher io.encodings.ascii
-       bake builder.util
-       accessors vars
-       math.parser ;
-
-IN: size-of
-
-! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-VAR: headers
-
-: include-headers ( -- seq )
-  headers> [ `{ "#include <" , ">" } to-string ] map ;
-
-: size-of-c-program ( type -- lines )
-  `{
-    "#include <stdio.h>"
-    include-headers
-    { "main() { printf( \"%i\" , sizeof( " , " ) ) ; }" }
-  }
-  to-strings ;
-
-! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-: c-file ( -- path ) "size-of.c" temp-file ;
-
-: exe ( -- path ) "size-of" temp-file ;
-
-! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-: size-of ( type -- n )
-  size-of-c-program c-file ascii set-file-lines
-
-  { "gcc" c-file "-o" exe } to-strings
-  [ "Error compiling generated C program" print ] run-or-bail
-
-  exe ascii <process-reader> contents string>number ;
\ No newline at end of file