diff --git a/NAERSTADMO.py b/NAERSTADMO.py
index a37c04ef39d9a29087d1dc80a29446c0d2fb4a5a..97492bb5bc94894b2542615065699701ce77b0c3 100644
--- a/NAERSTADMO.py
+++ b/NAERSTADMO.py
@@ -63,7 +63,7 @@ if datetime.now() <= start_date:
     exit(0)
 
 
-infile_path = f"{os.getenv("WEATHER_DATA_DIR")}{year}/"
+infile_path = f"{os.getenv('WEATHER_DATA_DIR')}{year}/"
 
 outtmp_path = f"out/{year}/"
 os.makedirs(outtmp_path, exist_ok=True)