diff --git a/lib/main.js b/lib/main.js
index 5e608c3..7db9382 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -21,7 +21,7 @@
 // MODULES //
 
 var defineProperty = require( '@stdlib/utils-define-property' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 var validate = require( './validate.js' );
 var createObject = require( './detect.js' );
 
@@ -71,7 +71,7 @@ function inherit( ctor, superCtor ) {
 		throw err;
 	}
 	if ( typeof superCtor.prototype === 'undefined' ) {
-		throw new TypeError( format( 'invalid argument. Second argument must have a prototype from which another object can inherit. Value: `%s`.', superCtor.prototype ) );
+		throw new TypeError( format( '1UTBD', superCtor.prototype ) );
 	}
 	// Create a prototype which inherits from the parent prototype:
 	ctor.prototype = createObject( superCtor.prototype );
diff --git a/lib/validate.js b/lib/validate.js
index 44e285b..ba2e2f7 100644
--- a/lib/validate.js
+++ b/lib/validate.js
@@ -20,7 +20,7 @@
 
 // MODULES //
 
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 
 
 // MAIN //
@@ -47,7 +47,7 @@ function validate( value ) {
 		value === null ||
 		(type !== 'object' && type !== 'function')
 	) {
-		return new TypeError( format( 'invalid argument. A provided constructor must be either an object (except null) or a function. Value: `%s`.', value ) );
+		return new TypeError( format( '1UTBE', value ) );
 	}
 	return null;
 }
diff --git a/package.json b/package.json
index fc8b0e0..cc9ca32 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "url": "https://github.com/stdlib-js/stdlib/issues"
   },
   "dependencies": {
-    "@stdlib/string-format": "^0.2.2",
+    "@stdlib/error-tools-fmtprodmsg": "^0.2.2",
     "@stdlib/utils-define-property": "^0.2.4",
     "@stdlib/error-tools-fmtprodmsg": "^0.2.2"
   },