diff --git a/redstone_toggle b/redstone_toggle
index ff83346..89eb261 100644
--- a/redstone_toggle
+++ b/redstone_toggle
@@ -50,7 +50,7 @@ function recv()
                     print("Pong!")
                     rednet.send(master, "Pong!")
                 elseif data == 'toggle' then
-                    local output_state = !redstone.getInput("back")
+                    local output_state = not redstone.getInput("back")
                     redstone.setOutput("back", output_state)
                     print("Toggled output to: " .. output_state)
                     rednet.send(master, "Toggled output to: " .. output_state)
@@ -66,7 +66,7 @@ function lever_input()
         local new_lever_state = redstone.getInput("top")
         if new_lever_state != lever_state then
             lever_state = new_lever_state
-            local output_state = !redstone.getInput("back")
+            local output_state = not redstone.getInput("back")
             redstone.setOutput("back", output_state)
             print("Toggled output to: " .. output_state)
             rednet.send(master, "Toggled output to: " .. output_state)