diff --git a/source/prototypes/gravel.lua b/source/prototypes/gravel.lua
index 29c5880..0137613 100644
--- a/source/prototypes/gravel.lua
+++ b/source/prototypes/gravel.lua
@@ -5,6 +5,6 @@ addItem("gravel","raw-resource","g1[other]",50)
 addItem("gravel-pile","raw-resource","g2[other]",50)
 
 addRecipe("stone-brick|gravel",	"smelting","",	1.5,{{"gravel-pile",1}},		{{"stone-brick",1}},"")
-addRecipe("gravel-pile",				"crafting","",	1.5,{{"gravel",5}},					{{"gravel-pile",1}},"b")
+addRecipe("gravel-pile",				"crafting",nil,	1.5,{{"gravel",5}},					{{"gravel-pile",1}},"b")
 
-addRecipeCategory("hc-pulverizer")
\ No newline at end of file
+addRecipeCategory("hc-pulverizer")