diff --git a/backend/app/models.py b/backend/app/models.py
index 8222ec2040764c15b7e827a09d434e14f04278fd..6f1621b140302ef65b9fc24374cdbc91d070030a 100644
--- a/backend/app/models.py
+++ b/backend/app/models.py
@@ -269,6 +269,7 @@ class SurveyResponseInfo(Base):
     birthyear = Column(Integer)
     gender = Column(String)
     primary_language = Column(String)
+    other_language = Column(String)
     education = Column(String)
 
 
diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index bc4a3c3df7344cde952e8e5ad02e85b323f9ccbf..d13fd2c6dfc13100499017e948c38c1ab1fefef2 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -307,6 +307,7 @@ class SurveyResponseInfoCreate(BaseModel):
     birthyear: int
     gender: str
     primary_language: str
+    other_language: str
     education: str
 
 
@@ -316,6 +317,7 @@ class SurveyResponseInfo(BaseModel):
     birthyear: int
     gender: str
     primary_language: str
+    other_language: str
     education: str
 
 
diff --git a/frontend/src/lang/en.json b/frontend/src/lang/en.json
index 42ade9d8b1368648cdc4e50973486e748a777241..a9dbdc6777a5508c63fab398f24a888e678f959f 100644
--- a/frontend/src/lang/en.json
+++ b/frontend/src/lang/en.json
@@ -186,6 +186,8 @@
 			"Master": "Master's degree or above"
 		},
 		"example": "Example",
+		"otherLanguage": "Is there any other language you are relatively fluent in?",
+		"otherLanguageNote": "(If you are fluent in multiple other languages, beyond your target language and your first language, please select the one closest to your target language or that seems to help you the most in learning your target language.)",
 		"consent": {
 			"intro": "You are invited to participate in a scientific study to design, validate and apply vocabulary tests.",
 			"ok": "I agree to participate in the study as described above.",
diff --git a/frontend/src/lang/fr.json b/frontend/src/lang/fr.json
index 8a0b09732dfaaf6d975666a1c2d3bf9ee678eb34..5e42f62b213adf2f2c59e4d9de9c045edb636022 100644
--- a/frontend/src/lang/fr.json
+++ b/frontend/src/lang/fr.json
@@ -274,7 +274,9 @@
 			"Bachelor": "Bachelier",
 			"Master": "Master ou diplôme supérieur"
 		},
-		"example": "Exemple"
+		"example": "Exemple",
+		"otherLanguage": "Is there any other language you are relatively fluent in?",
+		"otherLanguageNote": "(If you are fluent in multiple other languages, beyond your target language and your first language, please select the one closest to your target language or that seems to help you the most in learning your target language.)"
 	},
 	"users": {
 		"nickname": "Nom",
diff --git a/frontend/src/lib/api/survey.ts b/frontend/src/lib/api/survey.ts
index 52b17a7f00a2c14ecca744aff23e2faa4696784f..def03af31e4412db56808402ff31e530fa0d5287 100644
--- a/frontend/src/lib/api/survey.ts
+++ b/frontend/src/lib/api/survey.ts
@@ -52,6 +52,7 @@ export async function sendSurveyResponseInfoAPI(
 	birthyear: number,
 	gender: string,
 	primary_language: string,
+	other_language: string,
 	education: string
 ) {
 	const response = await fetch(`/api/surveys/info/${survey_id}`, {
@@ -62,6 +63,7 @@ export async function sendSurveyResponseInfoAPI(
 			birthyear,
 			gender,
 			primary_language,
+			other_language,
 			education
 		})
 	});
diff --git a/frontend/src/routes/tests/[id]/+page.svelte b/frontend/src/routes/tests/[id]/+page.svelte
index 9309500689ed07d7df829fe6fbb7e3cf4804c184..07d92950b955ba561a40fbf5b1c319d9c4277347 100644
--- a/frontend/src/routes/tests/[id]/+page.svelte
+++ b/frontend/src/routes/tests/[id]/+page.svelte
@@ -42,13 +42,13 @@
 	let questionsRandomized = $derived(getSortedQuestions(currentGroup));
 	let currentQuestionId = $state(0);
 	let currentQuestion = $derived(questionsRandomized[currentQuestionId]);
-	let type = $derived(currentQuestion.question.split(':')[0]);
-	let value = $derived(currentQuestion.question.split(':').slice(1).join(':'));
+	let type = $derived(currentQuestion?.question.split(':')[0]);
+	let value = $derived(currentQuestion?.question.split(':').slice(1).join(':'));
 	let gaps = $derived(type === 'gap' ? gapParts(currentQuestion.question) : null);
 	let soundPlayer: HTMLAudioElement;
 	let displayQuestionOptions: string[] = $derived(
 		(() => {
-			let d = [...(currentQuestion.options ?? [])];
+			let d = [...(currentQuestion?.options ?? [])];
 			shuffle(d);
 			return d;
 		})()
@@ -194,7 +194,7 @@
 	async function selectAnswer(selection: string, option: string) {
 		endSurveyAnswers[selection] = option;
 		subStep += 1;
-		if (subStep == 4) {
+		if (subStep == 5) {
 			await sendSurveyResponseInfoAPI(
 				fetch,
 				survey.id,
@@ -202,6 +202,7 @@
 				endSurveyAnswers.birthYear,
 				endSurveyAnswers.gender,
 				endSurveyAnswers.primaryLanguage,
+				endSurveyAnswers.other_language,
 				endSurveyAnswers.education
 			);
 			step += 1;
@@ -406,6 +407,23 @@
 				></Dropdown>
 			</div>
 		{:else if subStep === 3}
+			<div class="mx-auto mt-16 text-center px-4">
+				<p class="text-center font-bold py-4 px-6 m-auto">{$t('surveys.otherLanguage')}</p>
+				<p class="mb-6 text-sm text-gray-600 text-center">{$t('surveys.otherLanguageNote')}</p>
+				<Dropdown
+					values={[
+						{ value: 'none', display: '/' },
+						...Object.entries(config.PRIMARY_LANGUAGE).map(([code, name]) => ({
+							value: code,
+							display: name
+						}))
+					]}
+					bind:option={selectedOption}
+					placeholder={$t('surveys.otherLanguage')}
+					funct={() => selectAnswer('other_language', selectedOption)}
+				></Dropdown>
+			</div>
+		{:else if subStep === 4}
 			<div class="mx-auto mt-16 text-center px-4">
 				<p class="text-center font-bold py-4 px-6 m-auto">{$t('surveys.education.title')}</p>
 				<Dropdown
@@ -426,7 +444,7 @@
 	{:else}
 		{(step += 1)}
 	{/if}
-{:else if step == 4}
+{:else if step === 4}
 	<div class="mx-auto mt-16 text-center">
 		<h1>{$t('surveys.complete')}</h1>
 		{#if finalScore !== null}