diff --git a/openfoodfacts/api.py b/openfoodfacts/api.py
index b7d538c..766d20d 100644
--- a/openfoodfacts/api.py
+++ b/openfoodfacts/api.py
@@ -78,7 +78,7 @@ def predict_lang(self, text: str, k: int = 10, threshold: float = 0.01) -> JSONT
         return http_session.post(
             url=f"{self.base_url}/api/v1/predict/lang",
             data={"text": text, "k": k, "threshold": threshold},
-        )
+        ).json()
 
 
 class FacetResource: