diff --git a/data/languages/dutch.txt b/data/languages/dutch.txt
index a349240a7..995cc65ea 100644
--- a/data/languages/dutch.txt
+++ b/data/languages/dutch.txt
@@ -1,4 +1,3 @@
-
 ##### translated strings #####
 
 %d of %d servers, %d players
@@ -10,6 +9,19 @@
 %ds left
 == %ds over
 
+%i minute left
+== nog %i minuut
+
+%i minutes left
+== nog %i minuten
+
+%i second left
+== nog %i seconde
+
+%i seconds left
+== nog %i seconden
+
+
 %s Right click for context menu.
 == %s Rechtermuisknop voor context menu.
 
@@ -487,6 +499,9 @@ Name
 Name:
 == Naam:
 
+Name plates size
+== Grootte naamplaat
+
 New
 == Nieuw
 
@@ -763,6 +778,9 @@ Skins
 Sound
 == Geluid
 
+Sound error
+== Geluidsfout 
+
 Sound volume
 == Volume
 
@@ -811,6 +829,9 @@ Teeworlds %s is out! Download it at www.teeworlds.com!
 Texture Compression
 == Structuurscompressie
 
+The audio device couldn't be initialised.
+== Het geluid kon niet worden geladen.
+
 The server is running a non-standard tuning on a pure game type.
 == The server draait geen standaard spel type.
 
@@ -841,6 +862,9 @@ Type
 UI Color
 == UI kleur
 
+Unable to delete the demo
+== Demo kon niet worden verwijderd
+
 Up
 == Omhoog
 
@@ -948,30 +972,6 @@ no limit
 
 ##### needs translation #####
 
-%i minute left
-== 
-
-%i minutes left
-== 
-
-%i second left
-== 
-
-%i seconds left
-== 
-
-Name plates size
-== 
-
-Sound error
-== 
-
-The audio device couldn't be initialised.
-== 
-
-Unable to delete the demo
-== 
-
 ##### old translations #####
 
 ##### DDRace #####
diff --git a/datasrc/compile.py b/datasrc/compile.py
index 0cca54981..0ae3bbc72 100644
--- a/datasrc/compile.py
+++ b/datasrc/compile.py
@@ -69,8 +69,8 @@ if gen_client_content_header or gen_server_content_header:
 	order = []
 	for line in contentlines:
 		line = line.strip()
-		if line[:6] == "class " and '(Struct)' in line:
-			order += [line.split()[1].split("(")[0]]
+		if line[:6] == "class ".encode() and "(Struct)".encode() in line:
+			order += [line.split()[1].split("(".encode())[0].decode("ascii")]
 	for name in order:
 		EmitTypeDeclaration(content.__dict__[name])
 
diff --git a/scripts/cmd5.py b/scripts/cmd5.py
index 11a18137d..5f08e1d2b 100644
--- a/scripts/cmd5.py
+++ b/scripts/cmd5.py
@@ -3,32 +3,32 @@ import hashlib, sys, re
 alphanum = "0123456789abcdefghijklmnopqrstuvwzyxABCDEFGHIJKLMNOPQRSTUVWXYZ_"
 
 def cstrip(lines):
-	d = ""	
+	d = "".encode()
 	for l in lines:
-		l = re.sub("#.*", "", l)
-		l = re.sub("//.*", "", l)
-		d += l + " "
-	d = re.sub("\/\*.*?\*/", "", d) # remove /* */ comments
-	d = d.replace("\t", " ") # tab to space
-	d = re.sub("  *", " ", d) # remove double spaces
-	d = re.sub("", "", d) # remove /* */ comments
+		l = re.sub("#.*".encode(), "".encode(), l)
+		l = re.sub("//.*".encode(), "".encode(), l)
+		d += l + " ".encode()
+	d = re.sub("\/\*.*?\*/".encode(), "".encode(), d) # remove /* */ comments
+	d = d.replace("\t".encode(), " ".encode()) # tab to space
+	d = re.sub("  *".encode(), " ".encode(), d) # remove double spaces
+	d = re.sub("".encode(), "".encode(), d) # remove /* */ comments
 	
 	d = d.strip()
 	
 	# this eats up cases like 'n {'
 	i = 1
 	while i < len(d)-2:
-		if d[i] == ' ':
-			if not (d[i-1] in alphanum and d[i+1] in alphanum):
+		if d[i:i + 1] == " ":
+			if not (d[i-1:i] in alphanum and d[i+1:i + 2] in alphanum):
 				d = d[:i] + d[i+1:]
 		i += 1
 	return d
 
-f = ""
+f = "".encode()
 for filename in sys.argv[1:]:
 	f += cstrip([l.strip() for l in open(filename, "rb")])
 
-hash = hashlib.md5(f.encode()).hexdigest().lower()[16:]
+hash = hashlib.md5(f).hexdigest().lower()[16:]
 # TODO: refactor hash that is equal to the 0.5 hash, remove when we 
 # TODO: remove when we don't need it any more
 if hash == "f16c2456fc487748":
diff --git a/scripts/update_localization.py b/scripts/update_localization.py
index 61fb6c5b9..d68484119 100644
--- a/scripts/update_localization.py
+++ b/scripts/update_localization.py
@@ -8,8 +8,8 @@ source_exts = [".c", ".cpp", ".h"]
 def parse_source():
 	stringtable = {}
 	def process_line(line):
-		if b'Localize("' in line:
-			fields = line.split(b'Localize("', 1)[1].split(b'"', 1)
+		if 'Localize("'.encode() in line:
+			fields = line.split('Localize("'.encode(), 1)[1].split('"'.encode(), 1)
 			stringtable[fields[0]] = ""
 			process_line(fields[1])
 
@@ -35,7 +35,7 @@ def load_languagefile(filename):
 
 	for i in range(0, len(lines)-1):
 		l = lines[i].strip()
-		if len(l) and not l[0:1] == b"=" and not l[0:1] == b"#":
+		if len(l) and not l[0:1] == "=".encode() and not l[0:1] == "#".encode():
 			stringtable[l] = lines[i+1][3:].rstrip()
 
 	return stringtable
@@ -52,23 +52,23 @@ def generate_languagefile(outputfilename, srctable, loctable):
 		srctable_keys.append(key)
 	srctable_keys.sort()
 
-	content = b"\n##### translated strings #####\n\n"
+	content = "\n##### translated strings #####\n\n".encode()
 	for k in srctable_keys:
 		if k in loctable and len(loctable[k]):
-			content += k + b"\n== " + loctable[k] + b"\n\n"
+			content += k + "\n== ".encode() + loctable[k] + "\n\n".encode()
 			num_items += 1
 
-	content += b"##### needs translation #####\n\n"
+	content += "##### needs translation #####\n\n".encode()
 	for k in srctable_keys:
 		if not k in loctable or len(loctable[k]) == 0:
-			content += k + b"\n== \n\n"
+			content += k + "\n== \n\n".encode()
 			num_items += 1
 			new_items += 1
 
-	content += b"##### old translations #####\n\n"
+	content += "##### old translations #####\n\n".encode()
 	for k in loctable:
 		if not k in srctable:
-			content += k + b"\n== " + loctable[k] + b"\n\n"
+			content += k + "\n== ".encode() + loctable[k] + "\n\n".encode()
 			num_items += 1
 			old_items += 1
 
diff --git a/src/engine/client/text.cpp b/src/engine/client/text.cpp
index d24c41aef..e3509143a 100644
--- a/src/engine/client/text.cpp
+++ b/src/engine/client/text.cpp
@@ -178,13 +178,13 @@ class CTextRender : public IEngineTextRender
 		mem_free(pMem);
 	}
 
-	int AdjustOutlineThicknessToFontSize(int OutlineThickness, int FontSize)
-	{
-		if(FontSize > 36)
-			OutlineThickness *= 4;
-		else if(FontSize >= 18)
-			OutlineThickness *= 2;
-		return OutlineThickness;
+	int AdjustOutlineThicknessToFontSize(int OutlineThickness, int FontSize)
+	{
+		if(FontSize > 36)
+			OutlineThickness *= 4;
+		else if(FontSize >= 18)
+			OutlineThickness *= 2;
+		return OutlineThickness;
 	}
 
 	void IncreaseTextureSize(CFontSizeData *pSizeData)
diff --git a/src/game/editor/ed_editor.cpp b/src/game/editor/ed_editor.cpp
index 84f7b83a7..29f816575 100644
--- a/src/game/editor/ed_editor.cpp
+++ b/src/game/editor/ed_editor.cpp
@@ -424,7 +424,7 @@ int CEditor::DoButton_MenuItem(const void *pID, const char *pText, int Checked,
 	CUIRect t = *pRect;
 	t.VMargin(5.0f, &t);
 	UI()->DoLabel(&t, pText, 10, -1, -1);
-	return DoButton_Editor_Common(pID, pText, Checked, pRect, 0, 0);
+	return DoButton_Editor_Common(pID, pText, Checked, pRect, Flags, pToolTip);
 }
 
 int CEditor::DoButton_Tab(const void *pID, const char *pText, int Checked, const CUIRect *pRect, int Flags, const char *pToolTip)
@@ -3435,4 +3435,4 @@ void CEditor::UpdateAndRender()
 	Input()->ClearEvents();
 }
 
-IEditor *CreateEditor() { return new CEditor; }
\ No newline at end of file
+IEditor *CreateEditor() { return new CEditor; }