diff --git a/tools/generate.py b/tools/generate.py
index 9fa3ad505..1816a721d 100755
--- a/tools/generate.py
+++ b/tools/generate.py
@@ -6,10 +6,10 @@ import re
 import sys
 import os
 
-print '''
+print('''
 Java binding generator for BTstack
 Copyright 2014, BlueKitchen GmbH
-'''
+''')
 
 # com.bluekitchen.btstack.BTstack.java templates
 java_btstack_header = \
@@ -162,7 +162,7 @@ def camel_case_var(name):
 
 def read_defines(infile):
     global defines
-    with open (infile, 'rb') as fin:
+    with open (infile, 'rt') as fin:
 
         for line in fin:
             parts = re.match('#define\s+(\w+)\s+(\w*)',line)
@@ -274,11 +274,11 @@ def parse_commands(infile):
     
     outfile = '%s/BTstack.java' % gen_path
 
-    with open(outfile, 'w') as fout:
+    with open(outfile, 'wt') as fout:
     
         fout.write(java_btstack_header % package)
 
-        with open (infile, 'rb') as fin:
+        with open (infile, 'rt') as fin:
 
             params = []
             for line in fin:
@@ -346,7 +346,7 @@ def create_event(event_name, format, args):
 
     gen_event_path = '%s/event' % gen_path
     outfile = '%s/%s.java' % (gen_event_path, event_name)
-    with open(outfile, 'w') as fout:
+    with open(outfile, 'wt') as fout:
         offset = 2
         getters = ''
         length_name = ''
@@ -399,7 +399,7 @@ def create_event_factory(events, le_events, defines):
         event_name = camel_case(event_name)
         subcases += java_event_factory_subevent.format(event_type, event_name)
 
-    with open(outfile, 'w') as fout:
+    with open(outfile, 'wt') as fout:
         defines_text = java_defines_string(defines)
         fout.write(java_event_factory_template.format(package, defines_text, cases, subcases))
 
@@ -410,7 +410,7 @@ def parse_events(path):
     params = []
     event_types = set()
     format = None
-    with open (path, 'rb') as fin:
+    with open (path, 'rt') as fin:
         for line in fin:
             parts = re.match('.*@format\s*(\w*)\s*', line)
             if parts and len(parts.groups()) == 1:
@@ -448,4 +448,4 @@ create_events(le_events)
 create_event_factory(events, le_events, event_types)
 
 # done
-print 'Done!'
+print('Done!')
diff --git a/tools/update_copyright.py b/tools/update_copyright.py
index e67d4b5f3..f49abfd89 100644
--- a/tools/update_copyright.py
+++ b/tools/update_copyright.py
@@ -60,13 +60,13 @@ def updateCopyright(dir_name, file_name):
 	
 	#print "Update copyright: ", infile
 	
-	with open(outfile, 'w') as fout:
+	with open(outfile, 'wt') as fout:
 		fout.write(copyright)
 
 		bufferComment = ""
 		state = State.SearchStartComment
 
-		with open(infile, 'rb') as fin:
+		with open(infile, 'rt') as fin:
 			for line in fin:
 				if state == State.SearchStartComment:
 					parts = re.match('\s*(/\*).*(\*/)',line)
@@ -129,11 +129,11 @@ def requiresCopyrightUpdate(file_name):
 					return True
 			
 			if onlyDumpDifferentCopyright:
-				print file_name, ": Copyrighter not allowed > ", parts.group()
+				print(file_name, ": Copyrighter not allowed > ", parts.group())
 			return False
 				
 	if not exactCopyrightFound:
-		print file_name, ": File has no copyright"
+		print(file_name, ": File has no copyright")
 	
 	return False