diff --git a/utils/build_object_template_crc_string_tables.py b/utils/build_object_template_crc_string_tables.py
index 9b99ac3..125a71e 100755
--- a/utils/build_object_template_crc_string_tables.py
+++ b/utils/build_object_template_crc_string_tables.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 from os import walk, path, makedirs
 from subprocess import PIPE, Popen
@@ -34,7 +34,7 @@ def build_table(type, objs):
 	p = Popen(crc_call, stdin=PIPE, stdout=PIPE)
 
 	for obj in sorted(objs):
-		p.stdin.write(obj + '\n')
+		p.stdin.write('{}\n'.format(obj).encode('utf-8'))
 
 	p.communicate()
 
diff --git a/utils/build_planet_crc_string_tables.py b/utils/build_planet_crc_string_tables.py
index 50c8f8e..3e0efa0 100755
--- a/utils/build_planet_crc_string_tables.py
+++ b/utils/build_planet_crc_string_tables.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 from os import path, makedirs
 from subprocess import PIPE, Popen
diff --git a/utils/build_quest_crc_string_tables.py b/utils/build_quest_crc_string_tables.py
index 2ebf484..2f9f217 100755
--- a/utils/build_quest_crc_string_tables.py
+++ b/utils/build_quest_crc_string_tables.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 
 from os import walk, path, makedirs
 from subprocess import PIPE, Popen
@@ -39,6 +39,6 @@ crc_call = ['./tools/buildCrcStringTable.pl',  '-t', tabfile, ifffile]
 p = Popen(crc_call, stdin=PIPE, stdout=PIPE)
 
 for obj in allobjs:
-	p.stdin.write(obj + '\n')
+	p.stdin.write('{}\n'.format(obj).encode('utf-8'))
 
 p.communicate()