diff --git a/scripts/drone.coffee b/scripts/drone.coffee
index 34b69f7..42e6b74 100644
--- a/scripts/drone.coffee
+++ b/scripts/drone.coffee
@@ -23,6 +23,9 @@ module.exports = (robot) ->
         try
           report = JSON.parse body
         catch e
+          if /^404/g.test body
+            return res.send 'Coverage report non disponibile (404) forse \
+              non è ancora stato generato?'
           return res.send 'Errore: '+e+'\n\nRisposta del server: '+body
         unless report?.files?.push? and report?.coverage?.toFixed?
           return res.send 'Errore: informazioni insufficienti'
diff --git a/test/drone-test.coffee b/test/drone-test.coffee
index 7469bc6..0729b25 100644
--- a/test/drone-test.coffee
+++ b/test/drone-test.coffee
@@ -39,6 +39,15 @@ describe 'modulo drone', ->
       done()
     asjon.send 'asjon coverage'
 
+  it 'dovrebbe reagire correttamente quando il report non è disponibile (404)', (done) ->
+    nock('https://drone.io')
+      .get('/github.com/fazo96/asjon/files/coverage/coverage.json')
+      .reply 404, '404 page not found'
+    asjon.receive (e,l) ->
+      l.join().should.match /^Coverage report non disponibile/g
+      done()
+    asjon.send 'asjon coverage'
+
   it 'dovrebbe parsare correttamente il report json', (done) ->
     nock('https://drone.io')
       .get('/github.com/fazo96/asjon/files/coverage/coverage.json')