diff --git a/Makefile b/Makefile
index 4f91c8d..d5f0c22 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION := 1.0.0
+VERSION := 1.0.1
 NAME := marathon
 
 all: clean build install_mod
diff --git a/info.json b/info.json
index 7ba1955..b378669 100644
--- a/info.json
+++ b/info.json
@@ -1,6 +1,6 @@
 {
   "name": "marathon",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "title": "Marathon Mod",
   "author": "Benoit Girard & Afforess",
   "contributors": ["Wulfson", "KeepOnDigging", "gheift"],
diff --git a/prototypes/bobsmods/item.lua b/prototypes/bobsmods/item.lua
index 46dc78a..55616fa 100644
--- a/prototypes/bobsmods/item.lua
+++ b/prototypes/bobsmods/item.lua
@@ -1,2 +1,6 @@
-data.raw.item["carbon"].fuel_value = "2.5MJ"
-data.raw.item["liquid-fuel-canister"].fuel_value = "50MJ"
+if data.raw.item["carbon"] then
+    data.raw.item["carbon"].fuel_value = "2.5MJ"
+end
+if data.raw.item["liquid-fuel-canister"] then
+    data.raw.item["liquid-fuel-canister"].fuel_value = "50MJ"
+end