diff --git a/src/main/java/dan200/computercraft/ComputerCraft.java b/src/main/java/dan200/computercraft/ComputerCraft.java
index a51773124..440b4e5cd 100644
--- a/src/main/java/dan200/computercraft/ComputerCraft.java
+++ b/src/main/java/dan200/computercraft/ComputerCraft.java
@@ -36,7 +36,6 @@ public final class ComputerCraft
     public static int maximumFilesOpen = 128;
     public static boolean disableLua51Features = false;
     public static String defaultComputerSettings = "";
-    public static boolean debugEnable = true;
     public static boolean logComputerErrors = true;
     public static boolean commandRequireCreative = true;
 
diff --git a/src/main/java/dan200/computercraft/core/lua/CobaltLuaMachine.java b/src/main/java/dan200/computercraft/core/lua/CobaltLuaMachine.java
index 07cb1e923..c6b2932e7 100644
--- a/src/main/java/dan200/computercraft/core/lua/CobaltLuaMachine.java
+++ b/src/main/java/dan200/computercraft/core/lua/CobaltLuaMachine.java
@@ -97,7 +97,7 @@ public CobaltLuaMachine( Computer computer, TimeoutState timeout )
         globals.load( state, new CoroutineLib() );
         globals.load( state, new Bit32Lib() );
         globals.load( state, new Utf8Lib() );
-        if( ComputerCraft.debugEnable ) globals.load( state, new DebugLib() );
+        globals.load( state, new DebugLib() );
 
         // Remove globals we don't want to expose
         globals.rawset( "collectgarbage", Constants.NIL );
diff --git a/src/main/java/dan200/computercraft/shared/Config.java b/src/main/java/dan200/computercraft/shared/Config.java
index 121a8f882..4fb4f2c7d 100644
--- a/src/main/java/dan200/computercraft/shared/Config.java
+++ b/src/main/java/dan200/computercraft/shared/Config.java
@@ -42,7 +42,6 @@ public final class Config
     private static final ConfigValue<Integer> maximumFilesOpen;
     private static final ConfigValue<Boolean> disableLua51Features;
     private static final ConfigValue<String> defaultComputerSettings;
-    private static final ConfigValue<Boolean> debugEnabled;
     private static final ConfigValue<Boolean> logComputerErrors;
     private static final ConfigValue<Boolean> commandRequireCreative;
 
@@ -120,10 +119,6 @@ private Config() {}
                     "autocompletion" )
                 .define( "default_computer_settings", ComputerCraft.defaultComputerSettings );
 
-            debugEnabled = builder
-                .comment( "Enable Lua's debug library. This is sandboxed to each computer, so is generally safe to be used by players." )
-                .define( "debug_enabled", ComputerCraft.debugEnable );
-
             logComputerErrors = builder
                 .comment( "Log exceptions thrown by peripherals and other Lua objects.\n" +
                     "This makes it easier for mod authors to debug problems, but may result in log spam should people use buggy methods." )
@@ -317,7 +312,6 @@ public static void sync()
         ComputerCraft.maximumFilesOpen = maximumFilesOpen.get();
         ComputerCraft.disableLua51Features = disableLua51Features.get();
         ComputerCraft.defaultComputerSettings = defaultComputerSettings.get();
-        ComputerCraft.debugEnable = debugEnabled.get();
         ComputerCraft.computerThreads = computerThreads.get();
         ComputerCraft.logComputerErrors = logComputerErrors.get();
         ComputerCraft.commandRequireCreative = commandRequireCreative.get();
diff --git a/src/main/resources/data/computercraft/lua/rom/modules/main/cc/expect.lua b/src/main/resources/data/computercraft/lua/rom/modules/main/cc/expect.lua
index 877fa0476..9c93dc7d6 100644
--- a/src/main/resources/data/computercraft/lua/rom/modules/main/cc/expect.lua
+++ b/src/main/resources/data/computercraft/lua/rom/modules/main/cc/expect.lua
@@ -51,10 +51,8 @@ local function expect(index, value, ...)
 
     -- If we can determine the function name with a high level of confidence, try to include it.
     local name
-    if native_type(debug) == "table" and native_type(debug.getinfo) == "function" then
-        local ok, info = pcall(debug.getinfo, 3, "nS")
-        if ok and info.name and info.name ~= "" and info.what ~= "C" then name = info.name end
-    end
+    local ok, info = pcall(debug.getinfo, 3, "nS")
+    if ok and info.name and info.name ~= "" and info.what ~= "C" then name = info.name end
 
     local type_names = get_type_names(...)
     if name then
diff --git a/src/main/resources/data/computercraft/lua/rom/modules/main/cc/pretty.lua b/src/main/resources/data/computercraft/lua/rom/modules/main/cc/pretty.lua
index 9cd8410c7..37b691505 100644
--- a/src/main/resources/data/computercraft/lua/rom/modules/main/cc/pretty.lua
+++ b/src/main/resources/data/computercraft/lua/rom/modules/main/cc/pretty.lua
@@ -28,8 +28,7 @@ local expect = require "cc.expect"
 local expect, field = expect.expect, expect.field
 
 local type, getmetatable, setmetatable, colours, str_write, tostring = type, getmetatable, setmetatable, colours, write, tostring
-local debug_info = type(debug) == "table" and type(debug.getinfo) == "function" and debug.getinfo
-local debug_local = type(debug) == "table" and type(debug.getlocal) == "function" and debug.getlocal
+local debug_info, debug_local = debug.getinfo, debug.getlocal
 
 --- @{table.insert} alternative, but with the length stored inline.
 local function append(out, value)