diff --git a/scripts/relocate_sdk.py b/scripts/relocate_sdk.py
index 6f3530d..b7e579d 100755
--- a/scripts/relocate_sdk.py
+++ b/scripts/relocate_sdk.py
@@ -55,22 +55,22 @@ def parse_elf_header():
 
     if arch == 32:
         # 32bit
-        hdr_struct = struct.Struct("<HHILLLIHHHHHH")
+        hdr_fmt = "<HHILLLIHHHHHH"
         hdr_size = 52
     else:
         # 64bit
-        hdr_struct = struct.Struct("<HHIQQQIHHHHHH")
+        hdr_fmt = "<HHIQQQIHHHHHH"
         hdr_size = 64
 
     e_type, e_machine, e_version, e_entry, e_phoff, e_shoff, e_flags,\
     e_ehsize, e_phentsize, e_phnum, e_shentsize, e_shnum, e_shstrndx =\
-        hdr_struct.unpack(elf_header[16:hdr_size])
+        struct.unpack(hdr_fmt, elf_header[16:hdr_size])
 
 def change_interpreter(elf_file_name):
     if arch == 32:
-        ph_struct = struct.Struct("<IIIIIIII")
+        ph_fmt = "<IIIIIIII"
     else:
-        ph_struct = struct.Struct("<IIQQQQQQ")
+        ph_fmt = "<IIQQQQQQ"
 
     """ look for PT_INTERP section """
     for i in range(0,e_phnum):
@@ -79,11 +79,11 @@ def change_interpreter(elf_file_name):
         if arch == 32:
             # 32bit
             p_type, p_offset, p_vaddr, p_paddr, p_filesz,\
-                p_memsz, p_flags, p_align = ph_struct.unpack(ph_hdr)
+                p_memsz, p_flags, p_align = struct.unpack(ph_fmt, ph_hdr)
         else:
             # 64bit
             p_type, p_flags, p_offset, p_vaddr, p_paddr, \
-            p_filesz, p_memsz, p_align = ph_struct.unpack(ph_hdr)
+            p_filesz, p_memsz, p_align = struct.unpack(ph_fmt, ph_hdr)
 
         """ change interpreter """
         if p_type == 3:
@@ -104,9 +104,9 @@ def change_interpreter(elf_file_name):
 
 def change_dl_sysdirs():
     if arch == 32:
-        sh_struct = struct.Struct("<IIIIIIIIII")
+        sh_fmt = "<IIIIIIIIII"
     else:
-        sh_struct = struct.Struct("<IIQQQQIIQQ")
+        sh_fmt = "<IIQQQQIIQQ"
 
     """ read section string table """
     f.seek(e_shoff + e_shstrndx * e_shentsize)
@@ -127,7 +127,7 @@ def change_dl_sysdirs():
         sh_hdr = f.read(e_shentsize)
 
         sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link,\
-            sh_info, sh_addralign, sh_entsize = sh_struct.unpack(sh_hdr)
+            sh_info, sh_addralign, sh_entsize = struct.unpack(sh_fmt, sh_hdr)
 
         name = sh_strtab[sh_name:sh_strtab.find("\0", sh_name)]
 
@@ -181,7 +181,7 @@ def change_dl_sysdirs():
 
 # MAIN
 if len(sys.argv) < 4:
-    exit(-1)
+    sys.exit(-1)
 
 new_prefix = sys.argv[1]
 new_dl_path = sys.argv[2]
@@ -196,14 +196,14 @@ for e in executables_list:
 
     try:
         f = open(e, "r+b")
-    except IOError as ioex:
+    except IOError, ioex:
         if ioex.errno == errno.ETXTBSY:
             print("Could not open %s. File used by another process.\nPlease "\
                   "make sure you exit all processes that might use any SDK "\
                   "binaries." % e)
         else:
             print("Could not open %s: %s(%d)" % (e, ioex.strerror, ioex.errno))
-        exit(-1)
+        sys.exit(-1)
 
     arch = get_arch()
     if arch: