diff --git a/0052-linux-user-binfmt-support-host-binaries.patch b/0052-linux-user-binfmt-support-host-binaries.patch
index fb0d04d8..f3b63b1f 100644
--- a/0052-linux-user-binfmt-support-host-binaries.patch
+++ b/0052-linux-user-binfmt-support-host-binaries.patch
@@ -1,4 +1,4 @@
-From 3ee42b48dd69ca6f4cf35a065628088bbdf7fa4f Mon Sep 17 00:00:00 2001
+From 20d9c73417a401a79a3c5ae9aa07d635a06e9519 Mon Sep 17 00:00:00 2001
 From: Alexander Graf <agraf@suse.de>
 Date: Thu, 2 Feb 2012 18:02:33 +0100
 Subject: [PATCH] linux-user: binfmt: support host binaries
@@ -8,11 +8,11 @@ trying to run, let's just use that instead as it will be a lot faster.
 
 Signed-off-by: Alexander Graf <agraf@suse.de>
 ---
- linux-user/binfmt.c |   27 +++++++++++++++++++++++++++
- 1 files changed, 27 insertions(+), 0 deletions(-)
+ linux-user/binfmt.c |   25 +++++++++++++++++++++++++
+ 1 files changed, 25 insertions(+), 0 deletions(-)
 
 diff --git a/linux-user/binfmt.c b/linux-user/binfmt.c
-index cd1f513..74f5741 100644
+index cd1f513..87dc4c6 100644
 --- a/linux-user/binfmt.c
 +++ b/linux-user/binfmt.c
 @@ -5,6 +5,9 @@
@@ -25,7 +25,7 @@ index cd1f513..74f5741 100644
  
  int main(int argc, char **argv, char **envp)
  {
-@@ -28,6 +31,30 @@ int main(int argc, char **argv, char **envp)
+@@ -28,6 +31,28 @@ int main(int argc, char **argv, char **envp)
      binfmt[0] = '\0';
      /* Now argv[0] is the real qemu binary name */
  
@@ -39,9 +39,7 @@ index cd1f513..74f5741 100644
 +            goto skip;
 +        }
 +        guestarch++;
-+        hostbin = malloc(strlen(argv[1] + strlen("/emul/-for-/" ARCH_NAME) +
-+                         strlen(guestarch) + 1));
-+        sprintf(hostbin, "/emul/" ARCH_NAME "-for-%s/%s", guestarch, argv[1]);
++        asprintf(&hostbin, "/emul/" ARCH_NAME "-for-%s/%s", guestarch, argv[1]);
 +        if (!access(hostbin, X_OK)) {
 +            /*
 +             * We found a host binary replacement for the non-host binary. Let's