diff --git a/config/harvesting.lua b/config/harvesting.lua
index 282c591..8af9e2b 100644
--- a/config/harvesting.lua
+++ b/config/harvesting.lua
@@ -1,21 +1,4 @@
-local function mystical(essenceName)
-  return 'mysticalagriculture:' .. essenceName .. '_seeds'
-end
-
--- FALLBACK WHEN CANNOT FETCH THE REMOTE PLAN
-local DEFAULT_REMOTE_PLAN = {
-  mystical('coal'),
-  mystical('inferium'),
-  mystical('inferium'),
-  mystical('inferium'),
-  mystical('inferium'),
-  mystical('inferium'),
-  mystical('inferium'),
-  mystical('inferium')
-}
-
 return {
   length = 8,
-  firstCropZ = 2,
-  defaultRemotePlan = DEFAULT_REMOTE_PLAN
+  firstCropZ = 2
 }
diff --git a/inferium-harvester.lua b/inferium-harvester.lua
index 2100d9e..21ba859 100644
--- a/inferium-harvester.lua
+++ b/inferium-harvester.lua
@@ -263,14 +263,12 @@ local function retrieveLocalPlan()
   goBackToHome()
 end
 
--- TODO: fetch timeout ?
+-- TODO: fetch retry + timeout ?
 local function fetchRemotePlan()
-  local fallbackPlan = config.defaultRemotePlan or {}
-
   local modem = peripheral.find("modem")
 
   if not modem then
-    return fallbackPlan
+    error('no modem found')
   end
 
   modem.open(INFERIUM_REPLY_PORT)
@@ -286,7 +284,7 @@ local function fetchRemotePlan()
   modem.close(INFERIUM_REPLY_PORT)
 
   if not replyRawMessage then
-    return fallbackPlan
+    error('empty response from the server')
   end
 
   local replyMessage = textutils.unserialize(replyRawMessage)
@@ -295,7 +293,7 @@ local function fetchRemotePlan()
     return replyMessage.payload
   end
 
-  return fallbackPlan
+  error('message received but there is no payload: ' .. replyRawMessage)
 end
 
 local function removeSeeds(seeds)