diff --git a/lua/wire/stools/hydraulic.lua b/lua/wire/stools/hydraulic.lua
index 9a39c3d28b..2871a6b33c 100644
--- a/lua/wire/stools/hydraulic.lua
+++ b/lua/wire/stools/hydraulic.lua
@@ -178,7 +178,7 @@ function TOOL:RightClick( trace )
 	end
 	local trace2 = util.TraceLine( tr )
 
-	if CLIENT or not WireLib.CanTool(self:GetOwner(), trace2.Entity, "wire_hydraulic") then return false end
+	if CLIENT or not trace2.Entity:IsValid() or not WireLib.CanTool(self:GetOwner(), trace2.Entity, "wire_hydraulic") then return false end
 
 	return self:LeftClick(trace) and self:LeftClick(trace2)
 end