diff --git a/lib/Service.py b/lib/Service.py
index 60b792f..544f85b 100644
--- a/lib/Service.py
+++ b/lib/Service.py
@@ -17,8 +17,6 @@
 from sentencepiece import SentencePieceProcessor
 from util import clean_text
 
-GPU_ACCELERATED = os.getenv("COMPUTE_DEVICE", "CPU") != "CPU"
-
 logger = logging.getLogger(os.environ["APP_ID"] + __name__)
 
 class ServiceException(Exception):
@@ -43,7 +41,8 @@ def translate_context(config: dict):
 
         translator = ctranslate2.Translator(
             **{
-                "device": "cuda" if GPU_ACCELERATED else "cpu",
+                # only NVIDIA GPUs are supported by CTranslate2 for now
+                "device": "cuda" if os.getenv("COMPUTE_DEVICE") == "CUDA" else "cpu",
                 **config["loader"],
             }
         )