diff --git a/debugsubpkg.diff b/debugsubpkg.diff
index de7bcb3..1d825e5 100644
--- a/debugsubpkg.diff
+++ b/debugsubpkg.diff
@@ -1,5 +1,5 @@
 --- ./build/files.c.orig	2017-02-16 09:52:49.292092380 +0000
-+++ ./build/files.c	2017-03-22 12:11:05.013909767 +0000
++++ ./build/files.c	2017-03-22 12:15:29.060287267 +0000
 @@ -21,6 +21,10 @@
  #include <rpm/rpmlog.h>
  #include <rpm/rpmbase64.h>
@@ -77,24 +77,24 @@
 +      data = elf_rawdata (s, NULL);
 +      src.d_buf = data->d_buf;
 +      assert (sizeof (Elf32_Nhdr) == sizeof (Elf64_Nhdr));
-+      while (data->d_buf + data->d_size - src.d_buf > (int) sizeof nh
++      while ((unsigned char *)data->d_buf + data->d_size - (unsigned char *)src.d_buf > (int) sizeof nh
 +	     && elf32_xlatetom (&dst, &src, ehdr.e_ident[EI_DATA]))
 +	{
 +	  Elf32_Word len = sizeof nh + nh.n_namesz;
 +	  len = (len + 3) & ~3;
 +
 +	  if (nh.n_namesz == sizeof "GNU" && nh.n_type == 3
-+	      && !memcmp (src.d_buf + sizeof nh, "GNU", sizeof "GNU"))
++	      && !memcmp ((unsigned char *)src.d_buf + sizeof nh, "GNU", sizeof "GNU"))
 +	    {
 +	      build_id = data;
-+	      build_id_offset = src.d_buf + len - data->d_buf;
++	      build_id_offset = (unsigned char *)src.d_buf + len - (unsigned char *)data->d_buf;
 +	      build_id_size = nh.n_descsz;
 +	      break;
 +	    }
 +
 +	  len += nh.n_descsz;
 +	  len = (len + 3) & ~3;
-+	  src.d_buf += len;
++	  src.d_buf = (unsigned char *)src.d_buf + len;
 +	}
 +
 +      if (build_id != NULL)
@@ -106,7 +106,7 @@
 +
 +  *id = malloc (build_id_size);
 +  *id_size = build_id_size;
-+  memcpy (*id, build_id->d_buf + build_id_offset, build_id_size);
++  memcpy (*id, (unsigned char *)build_id->d_buf + build_id_offset, build_id_size);
 +
 +  elf_end (elf);
 +  close (fd);