diff --git a/doc/p/quickdic6.md b/doc/p/quickdic6.md
index 7e0c6ceec..58bdf4c44 100644
--- a/doc/p/quickdic6.md
+++ b/doc/p/quickdic6.md
@@ -19,11 +19,9 @@
 
 ### Write options
 
-| Name             | Default | Type | Comment                                            |
-| ---------------- | ------- | ---- | -------------------------------------------------- |
-| normalizer_rules |         | str  | ICU normalizer rules to use for index sorting      |
-| source_lang      |         | str  | The language of the tokens in the dictionary index |
-| target_lang      |         | str  | The language of the dictionary entries             |
+| Name             | Default | Type | Comment                                       |
+| ---------------- | ------- | ---- | --------------------------------------------- |
+| normalizer_rules |         | str  | ICU normalizer rules to use for index sorting |
 
 ### Dependencies for reading
 
diff --git a/plugins-meta/index.json b/plugins-meta/index.json
index a63dde746..6bf474610 100644
--- a/plugins-meta/index.json
+++ b/plugins-meta/index.json
@@ -1419,18 +1419,6 @@
 				"type": "str",
 				"customValue": true,
 				"comment": "ICU normalizer rules to use for index sorting"
-			},
-			"source_lang": {
-				"class": "StrOption",
-				"type": "str",
-				"customValue": true,
-				"comment": "The language of the tokens in the dictionary index"
-			},
-			"target_lang": {
-				"class": "StrOption",
-				"type": "str",
-				"customValue": true,
-				"comment": "The language of the dictionary entries"
 			}
 		},
 		"canRead": true,
@@ -1438,9 +1426,7 @@
 		"sortOnWrite": "never",
 		"readOptions": {},
 		"writeOptions": {
-			"normalizer_rules": "",
-			"source_lang": "",
-			"target_lang": ""
+			"normalizer_rules": ""
 		},
 		"readDepends": {
 			"icu": "PyICU"
diff --git a/pyglossary/plugins/quickdic6.py b/pyglossary/plugins/quickdic6.py
index 0860f7a51..327b8167c 100644
--- a/pyglossary/plugins/quickdic6.py
+++ b/pyglossary/plugins/quickdic6.py
@@ -22,7 +22,6 @@
 from pyglossary.core import log
 from pyglossary.flags import NEVER
 from pyglossary.html_utils import unescape_unicode
-from pyglossary.langs import langDict
 from pyglossary.option import (
 	Option,
 	StrOption,
@@ -65,12 +64,6 @@
 	"normalizer_rules": StrOption(
 		comment="ICU normalizer rules to use for index sorting",
 	),
-	"source_lang": StrOption(
-		comment="The language of the tokens in the dictionary index",
-	),
-	"target_lang": StrOption(
-		comment="The language of the dictionary entries",
-	),
 }
 
 HASH_SET_INIT = (
@@ -810,8 +803,6 @@ def __iter__(self) -> typing.Iterator[EntryType]:
 
 class Writer:
 	_normalizer_rules = ""
-	_source_lang = ""
-	_target_lang = ""
 
 	def __init__(self, glos: GlossaryType) -> None:
 		self._glos = glos
@@ -852,28 +843,20 @@ def write(self) -> typing.Generator[None, EntryType, None]:
 			# specifies the entry type to use.
 			htmls.append((0, words[0], entry.defi))
 
+		glos = self._glos
+
 		log.info("Collecting meta data ...")
-		name = self._glos.getInfo("bookname")
+		name = glos.getInfo("bookname")
 		if not name:
-			name = self._glos.getInfo("description")
+			name = glos.getInfo("description")
 
-		sourceLang = (
-			self._glos.sourceLang
-			if not self._source_lang
-			else langDict[self._source_lang]
-		)
-		targetLang = (
-			self._glos.targetLang
-			if not self._target_lang
-			else langDict[self._target_lang]
-		)
-		if sourceLang and targetLang:
-			sourceLang = sourceLang.code
-			targetLang = targetLang.code
-		else:
-			# fallback if no languages are specified
-			sourceLang = targetLang = "EN"
-		langs = f"{sourceLang}->{targetLang}"
+		sourceLangCode, targetLangCode = "EN", "EN"
+		if glos.sourceLang:
+			sourceLangCode = glos.sourceLang.code
+		if glos.targetLang:
+			targetLangCode = glos.targetLang.code
+
+		langs = f"{sourceLangCode}->{targetLangCode}"
 		if langs not in name.lower():
 			name = f"{self._glos.getInfo('name')} ({langs})"
 
@@ -898,7 +881,7 @@ def write(self) -> typing.Generator[None, EntryType, None]:
 			# indices: list[EntryIndexTuple] | None = None,
 		)
 
-		short_name = long_name = iso = sourceLang
+		short_name = long_name = iso = sourceLangCode
 		normalizer_rules = self._normalizer_rules or (
 			default_de_normalizer_rules if iso == "DE" else default_normalizer_rules
 		)