diff --git a/Makefile.am b/Makefile.am
index 806366a..b23c901 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,11 +4,11 @@ ACLOCAL_AMFLAGS = -I m4
 
 lib_LTLIBRARIES = libwinterop.so.la libmsi.so.la libpreload.la
 
-libwinterop_so_la_SOURCES = fake-winterop.c fake-lib.c fake-lib.h	\
-memory.c memory.h dupstr.c dupstr.h subproc.c subproc.h
+libwinterop_so_la_SOURCES = fake-winterop.c memory.c memory.h	\
+dupstr.c dupstr.h subproc.c subproc.h uchars.c uchars.h
 
-libmsi_so_la_SOURCES = fake-msi.c fake-lib.c fake-lib.h md5.c		\
-memory.c memory.h version.c dupstr.c dupstr.h subproc.c subproc.h
+libmsi_so_la_SOURCES = fake-msi.c md5.c memory.c memory.h version.c	\
+dupstr.c dupstr.h subproc.c subproc.h uchars.c uchars.h
 
 libpreload_la_SOURCES = preload.c
 libpreload_la_LDFLAGS = -ldl
diff --git a/configure.ac b/configure.ac
index a5986be..6b657b6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 # autoconf input for Wix Linux shim.
 
 AC_INIT([wix-linux-shim], [NOVERSION], [anakin@pobox.com])
-AC_CONFIG_SRCDIR([fake-lib.h])
+AC_CONFIG_SRCDIR([makecab.py])
 AC_CONFIG_MACRO_DIRS([m4])
 
 AM_INIT_AUTOMAKE(foreign)
diff --git a/fake-msi.c b/fake-msi.c
index 0600671..7bdcdc6 100644
--- a/fake-msi.c
+++ b/fake-msi.c
@@ -17,7 +17,7 @@
 #include "memory.h"
 #include "dupstr.h"
 #include "subproc.h"
-#include "fake-lib.h"
+#include "uchars.h"
 
 typedef struct MsiTypePrefix {
     enum { MAIN, VIEW, RECORD } type;
diff --git a/fake-winterop.c b/fake-winterop.c
index 1b439fe..d238784 100644
--- a/fake-winterop.c
+++ b/fake-winterop.c
@@ -14,7 +14,7 @@
 #include "memory.h"
 #include "dupstr.h"
 #include "subproc.h"
-#include "fake-lib.h"
+#include "uchars.h"
 
 uint32_t HashPublicKeyInfo(void *pCertContext,
                            void *rgbSubjectKeyIdentifier,
diff --git a/md5.c b/md5.c
index 4074716..71dfc9b 100644
--- a/md5.c
+++ b/md5.c
@@ -20,7 +20,7 @@
 #include <err.h>
 
 #include "memory.h"
-#include "fake-lib.h"
+#include "uchars.h"
 
 /* ----------------------------------------------------------------------
  * Core MD5 algorithm: processes 16-word blocks into a message digest.
diff --git a/fake-lib.c b/uchars.c
similarity index 74%
rename from fake-lib.c
rename to uchars.c
index e2bc364..5f09f60 100644
--- a/fake-lib.c
+++ b/uchars.c
@@ -1,21 +1,12 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <stdarg.h>
-#include <string.h>
-#include <uchar.h>
-#include <err.h>
-
 #include "memory.h"
-#include "fake-lib.h"
+#include "uchars.h"
 
 char *ascii(const char16_t *wstr, bool translate_slashes)
 {
     size_t len = 0;
     for (const char16_t *wp = wstr; *wp; wp++)
         len++;
-    char *ret = malloc(len + 1);
+    char *ret = snewn(len + 1, char);
     char *p = ret;
     for (const char16_t *wp = wstr; *wp; wp++)
         *p++ = (*wp == '\\' && translate_slashes ? '/' :
diff --git a/fake-lib.h b/uchars.h
similarity index 76%
rename from fake-lib.h
rename to uchars.h
index 5ae4a91..6e68e7c 100644
--- a/fake-lib.h
+++ b/uchars.h
@@ -1,5 +1,6 @@
 #include <uchar.h>
-#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
 
 char *ascii(const char16_t *wstr, bool translate_slashes);
 void c16cpy(char16_t *out, uint32_t *outsize, char *s);
diff --git a/version.c b/version.c
index c8d4991..2ba7372 100644
--- a/version.c
+++ b/version.c
@@ -10,7 +10,7 @@
 #include <err.h>
 
 #include "memory.h"
-#include "fake-lib.h"
+#include "uchars.h"
 
 uint32_t MsiGetFileVersionW(const char16_t *filename,
                             char16_t *version, uint32_t *version_size,