diff --git a/csv_metadata_quality/check.py b/csv_metadata_quality/check.py
index bafb2c7..f160461 100755
--- a/csv_metadata_quality/check.py
+++ b/csv_metadata_quality/check.py
@@ -221,23 +221,23 @@ def agrovoc(field, field_name):
     if pd.isna(field):
         return
 
+    # enable transparent request cache with thirty days expiry
+    expire_after = timedelta(days=30)
+    requests_cache.install_cache(
+        "agrovoc-response-cache", expire_after=expire_after
+    )
+
+    # prune old cache entries
+    requests_cache.core.remove_expired_responses()
+
     # Try to split multi-value field on "||" separator
     for value in field.split("||"):
         request_url = (
             f"http://agrovoc.uniroma2.it/agrovoc/rest/v1/agrovoc/search?query={value}"
         )
 
-        # enable transparent request cache with thirty days expiry
-        expire_after = timedelta(days=30)
-        requests_cache.install_cache(
-            "agrovoc-response-cache", expire_after=expire_after
-        )
-
         request = requests.get(request_url)
 
-        # prune old cache entries
-        requests_cache.core.remove_expired_responses()
-
         if request.status_code == requests.codes.ok:
             data = request.json()