diff --git a/package.json b/package.json
index fd8718ae..b801f2cb 100644
--- a/package.json
+++ b/package.json
@@ -39,6 +39,7 @@
     "cheerio": "^1.0.0-rc.1",
     "commander": "^2.8.1",
     "denodeify": "^1.2.1",
+    "didyoumean": "^1.2.1",
     "glob": "^7.0.6",
     "lodash": "^4.17.10",
     "markdown-it": "^8.3.1",
@@ -58,6 +59,7 @@
     "@types/cheerio": "^0.22.1",
     "@types/commander": "^2.12.2",
     "@types/denodeify": "^1.2.31",
+    "@types/didyoumean": "^1.2.0",
     "@types/glob": "^7.1.1",
     "@types/lodash": "^4.14.123",
     "@types/markdown-it": "0.0.2",
@@ -69,8 +71,8 @@
     "@types/semver": "^6.0.0",
     "@types/tmp": "^0.1.0",
     "@types/xml2js": "^0.4.4",
-    "cpx": "^1.5.0",
     "concurrently": "^4.1.0",
+    "cpx": "^1.5.0",
     "mocha": "^5.2.0",
     "source-map-support": "^0.4.2",
     "typescript": "^3.4.3",
diff --git a/src/main.ts b/src/main.ts
index 06326888..5138689e 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,4 +1,6 @@
 import * as program from 'commander';
+import * as didYouMean from 'didyoumean';
+
 import { packageCommand, ls } from './package';
 import { publish, unpublish } from './publish';
 import { show } from './show';
@@ -127,7 +129,16 @@ module.exports = function (argv: string[]): void {
 
 	program
 		.command('*')
-		.action(() => program.help());
+		.action((cmd: string) => {
+			program.outputHelp();
+			log.error(`Unknown command ${cmd}`);
+
+			const availableCommands: string[] = program.commands.map(c => c._name);
+			const suggestion: string | string[] = didYouMean(cmd, availableCommands);
+			if (suggestion) {
+				log.warn(`Did you mean '${suggestion}'?`);
+			}
+		});
 
 	program.parse(argv);
 
diff --git a/yarn.lock b/yarn.lock
index c0707e26..3b810cb1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -578,6 +578,11 @@ detect-libc@^1.0.2:
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
 
+didyoumean@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/didyoumean/-/didyoumean-1.2.1.tgz#e92edfdada6537d484d73c0172fd1eba0c4976ff"
+  integrity sha1-6S7f2tplN9SE1zwBcv0eugxJdv8=
+
 diff@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"