diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcce70d..f9eefac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,8 +12,8 @@
 - [x] Loader and targets loading animation
 - [x] Start/Stop datetime fields
 - [x] Retry CSV generation when it fails due to a bug in AMDA's API
+- [x] Remove duplicate NetCDFs from AMDA's API response
 - [ ] Optimize CSV generation (with some vectorization using numpy)
-- [ ] Remove duplicate NetCDFs from AMDA's API response
 - [ ] Download raw data (as CSV) for current time interval and targets
 - [ ] Same via SAMP
 - [ ] Credit the author of the pixel art planets
diff --git a/web/run.py b/web/run.py
index 92613d8..0f2d544 100755
--- a/web/run.py
+++ b/web/run.py
@@ -219,7 +219,10 @@ def retrieve_data(orbiter, what, started_at, stopped_at):
         finally:
             retries += 1
     if not remote_gzip_files:
-        abort(400, "Failed to fetch data at '%s' : %s" % (url, errors))
+        abort(400, "Failed to fetch gzip files list for %s at '%s' : %s" %
+                   (orbiter, url, errors))
+    else:
+        remote_gzip_files = list(set(remote_gzip_files))
 
     log.debug("Fetched remote gzip files list : %s." % str(remote_gzip_files))
 
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