diff --git a/src/commands.ts b/src/commands.ts
index 291bc00..7cbf51e 100644
--- a/src/commands.ts
+++ b/src/commands.ts
@@ -5,6 +5,7 @@ import { state } from './state';
 import { showMessageWithTimeout } from './vscode';
 import { showApiKeyInput, showSourceLanguageInput, showTargetLanguageInput, showUseProInput } from "./inputs";
 import { TranslateCommandParam, TranslateParam } from './types';
+import { getDefaultSourceLanguage, getDefaultTargetLanguage } from './helper';
 
 function translateSelections(selections: vscode.Selection[], translateParam: TranslateParam): Thenable<void> {
   const { targetLang, sourceLang, below } = translateParam;
@@ -73,15 +74,18 @@ function createTranslateCommand(param: TranslateCommandParam) {
         ? state.sourceLanguage
         : null;
     if (askForSourceLang && sourceLang) {
-      state.sourceLanguage = sourceLang;
+      state.sourceLanguage = sourceLang ?? getDefaultSourceLanguage();
     }
 
     if (askForTargetLang || !state.targetLanguage) {
-      state.targetLanguage = await showTargetLanguageInput();
+      const targetLanguage = await showTargetLanguageInput();
 
-      if (!state.targetLanguage) {
+      if (!targetLanguage) {
+        state.targetLanguage = getDefaultTargetLanguage();
         return;
       }
+
+      state.targetLanguage = targetLanguage;
     }
 
     const selections = vscode.window.activeTextEditor?.selections?.filter(selection => !selection.isEmpty);
diff --git a/src/helper.ts b/src/helper.ts
new file mode 100644
index 0000000..0d69141
--- /dev/null
+++ b/src/helper.ts
@@ -0,0 +1,11 @@
+import * as vscode from 'vscode';
+
+export function getDefaultTargetLanguage(config?: vscode.WorkspaceConfiguration): string | null {
+  config = config ?? vscode.workspace.getConfiguration('deepl');
+  return config.get('defaultTargetLanguage', null);
+}
+
+export function getDefaultSourceLanguage(config?: vscode.WorkspaceConfiguration): string | null {
+  config = config ?? vscode.workspace.getConfiguration('deepl');
+  return config.get('defaultSourceLanguage', null);
+}
\ No newline at end of file
diff --git a/src/state.ts b/src/state.ts
index 37fb332..8fae245 100644
--- a/src/state.ts
+++ b/src/state.ts
@@ -2,6 +2,7 @@ import * as vscode from 'vscode';
 import * as debug from './debug';
 import { ExtensionState } from './types';
 import { reactive, watch, ref } from 'vue';
+import { getDefaultSourceLanguage, getDefaultTargetLanguage } from './helper';
 
 const initialized = ref(false);
 
@@ -43,8 +44,8 @@ export function setup(context: vscode.ExtensionContext) {
   state.nonSplittingTags = config.get('nonSplittingTags') ?? "";
   state.preserveFormatting = config.get('preserveFormatting') ?? false;
   state.glossaryId = config.get('glossaryId') ?? "";
-  state.targetLanguage = context.workspaceState.get<string>('deepl:targetLanguage') ?? config.get('defaultTargetLanguage', null);
-  state.sourceLanguage = context.workspaceState.get<string>('deepl:sourceLanguage') ?? config.get('defaultSourceLanguage', null);
+  state.targetLanguage = context.workspaceState.get<string>('deepl:targetLanguage') ?? getDefaultTargetLanguage(config);
+  state.sourceLanguage = context.workspaceState.get<string>('deepl:sourceLanguage') ?? getDefaultSourceLanguage(config);
 
   debug.write(`Initialized extension using state:`);
   debug.write(JSON.stringify(state, null, 2));