diff --git a/types/debug/debug-tests.ts b/types/debug/debug-tests.ts
index bad51ed584..92d6f5eb8e 100644
--- a/types/debug/debug-tests.ts
+++ b/types/debug/debug-tests.ts
@@ -1,26 +1,31 @@
+import * as debug1 from "debug";
+/*tslint:disable-next-line:no-duplicate-imports*/
+import debug2 from 'debug';
 
+const log2: debug1.Debugger = debug2("DefinitelyTyped:log");
+log2("Just text");
+log2("Formatted test (%d arg)", 1);
+log2("Formatted %s (%d args)", "test", 2);
 
-import debug = require("debug");
+debug1.disable();
+debug1.enable("DefinitelyTyped:*");
 
-debug.disable();
-debug.enable("DefinitelyTyped:*");
-
-var log:debug.IDebugger = debug("DefinitelyTyped:log");
+const log: debug1.Debugger = debug1("DefinitelyTyped:log");
 
 log("Just text");
 log("Formatted test (%d arg)", 1);
 log("Formatted %s (%d args)", "test", 2);
 
-log("Enabled?: %s", debug.enabled("DefinitelyTyped:log"));
-log("Name Enabled: %s", debug.names.some(name => name.test("DefinitelyTyped:log")));
+log("Enabled?: %s", debug1.enabled("DefinitelyTyped:log"));
+log("Name Enabled: %s", debug1.names.some(name => name.test("DefinitelyTyped:log")));
 log("Namespace: %s", log.namespace);
 
-var error:debug.IDebugger = debug("DefinitelyTyped:error");
+const error: debug1.Debugger = debug1("DefinitelyTyped:error");
 error.log = console.error.bind(console);
 error("This should be printed to stderr");
 
-var extendedLog: debug.IDebugger = log.extend('extended');
+const extendedLog: debug1.Debugger = log.extend('extended');
 extendedLog("Testing this is also an IDebugger.");
 
-var extendedWithCustomDelimiter: debug.IDebugger = log.extend('with-delim', '.');
-extendedWithCustomDelimiter("Testing this is an IDebugger, too.");
\ No newline at end of file
+const extendedWithCustomDelimiter: debug1.Debugger = log.extend('with-delim', '.');
+extendedWithCustomDelimiter("Testing this is an IDebugger, too.");
diff --git a/types/debug/index.d.ts b/types/debug/index.d.ts
index 2eca1c8fb8..2067b27222 100644
--- a/types/debug/index.d.ts
+++ b/types/debug/index.d.ts
@@ -1,40 +1,45 @@
-// Type definitions for debug
+// Type definitions for debug 4.1
 // Project: https://github.com/visionmedia/debug
 // Definitions by: Seon-Wook Park <https://github.com/swook>
 //                 Gal Talmor <https://github.com/galtalmor>
 //                 John McLaughlin <https://github.com/zamb3zi>
 //                 Brasten Sager <https://github.com/brasten>
+//                 Nicolas Penin <https://github.com/npenin>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-declare var debug: debug.IDebug;
+declare var debug: debug.Debug & {debug: debug.Debug, default: debug.Debug};
 
 export = debug;
 export as namespace debug;
 
 declare namespace debug {
-    export interface IDebug {
-        (namespace: string): debug.IDebugger,
-        coerce: (val: any) => any,
-        disable: () => void,
-        enable: (namespaces: string) => void,
-        enabled: (namespaces: string) => boolean,
+    interface Debug {
+        (namespace: string): Debugger;
+        coerce: (val: any) => any;
+        disable: () => void;
+        enable: (namespaces: string) => void;
+        enabled: (namespaces: string) => boolean;
 
-        names: RegExp[],
-        skips: RegExp[],
+        names: RegExp[];
+        skips: RegExp[];
 
-        formatters: IFormatters
+        formatters: Formatters;
     }
 
-    export interface IFormatters {
-        [formatter: string]: Function
+    type IDebug = Debug;
+
+    interface Formatters {
+        [formatter: string]: (v: any) => string;
     }
 
-    export interface IDebugger {
+    type IDebugger = Debugger;
+
+    interface Debugger {
         (formatter: any, ...args: any[]): void;
 
         enabled: boolean;
-        log: Function;
+        log: (v: any) => string;
         namespace: string;
-        extend: (namespace: string, delimiter?: string) => debug.IDebugger;
+        extend: (namespace: string, delimiter?: string) => Debugger;
     }
 }
diff --git a/types/debug/tslint.json b/types/debug/tslint.json
index a41bf5d19a..f93cf8562a 100644
--- a/types/debug/tslint.json
+++ b/types/debug/tslint.json
@@ -1,79 +1,3 @@
 {
-    "extends": "dtslint/dt.json",
-    "rules": {
-        "adjacent-overload-signatures": false,
-        "array-type": false,
-        "arrow-return-shorthand": false,
-        "ban-types": false,
-        "callable-types": false,
-        "comment-format": false,
-        "dt-header": false,
-        "eofline": false,
-        "export-just-namespace": false,
-        "import-spacing": false,
-        "interface-name": false,
-        "interface-over-type-literal": false,
-        "jsdoc-format": false,
-        "max-line-length": false,
-        "member-access": false,
-        "new-parens": false,
-        "no-any-union": false,
-        "no-boolean-literal-compare": false,
-        "no-conditional-assignment": false,
-        "no-consecutive-blank-lines": false,
-        "no-construct": false,
-        "no-declare-current-package": false,
-        "no-duplicate-imports": false,
-        "no-duplicate-variable": false,
-        "no-empty-interface": false,
-        "no-for-in-array": false,
-        "no-inferrable-types": false,
-        "no-internal-module": false,
-        "no-irregular-whitespace": false,
-        "no-mergeable-namespace": false,
-        "no-misused-new": false,
-        "no-namespace": false,
-        "no-object-literal-type-assertion": false,
-        "no-padding": false,
-        "no-redundant-jsdoc": false,
-        "no-redundant-jsdoc-2": false,
-        "no-redundant-undefined": false,
-        "no-reference-import": false,
-        "no-relative-import-in-test": false,
-        "no-self-import": false,
-        "no-single-declare-module": false,
-        "no-string-throw": false,
-        "no-unnecessary-callback-wrapper": false,
-        "no-unnecessary-class": false,
-        "no-unnecessary-generics": false,
-        "no-unnecessary-qualifier": false,
-        "no-unnecessary-type-assertion": false,
-        "no-useless-files": false,
-        "no-var-keyword": false,
-        "no-var-requires": false,
-        "no-void-expression": false,
-        "no-trailing-whitespace": false,
-        "object-literal-key-quotes": false,
-        "object-literal-shorthand": false,
-        "one-line": false,
-        "one-variable-per-declaration": false,
-        "only-arrow-functions": false,
-        "prefer-conditional-expression": false,
-        "prefer-const": false,
-        "prefer-declare-function": false,
-        "prefer-for-of": false,
-        "prefer-method-signature": false,
-        "prefer-template": false,
-        "radix": false,
-        "semicolon": false,
-        "space-before-function-paren": false,
-        "space-within-parens": false,
-        "strict-export-declare-modifiers": false,
-        "trim-file": false,
-        "triple-equals": false,
-        "typedef-whitespace": false,
-        "unified-signatures": false,
-        "void-return": false,
-        "whitespace": false
-    }
+    "extends": "dtslint/dt.json"
 }