diff --git a/lib/main.js b/lib/main.js
index 6971850..075a0e1 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -22,7 +22,7 @@
 
 var isCollection = require( '@stdlib/assert-is-collection' );
 var isFunction = require( '@stdlib/assert-is-function' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 
 
 // MAIN //
@@ -59,10 +59,10 @@ function inmap( collection, fcn, thisArg ) {
 	var v;
 	var i;
 	if ( !isCollection( collection ) ) {
-		throw new TypeError( format( 'invalid argument. First argument must be a collection. Value: `%s`.', collection ) );
+		throw new TypeError( format( '1UzAh', collection ) );
 	}
 	if ( !isFunction( fcn ) ) {
-		throw new TypeError( format( 'invalid argument. Second argument must be a function. Value: `%s`.', fcn ) );
+		throw new TypeError( format( '1Uz2H', fcn ) );
 	}
 	len = collection.length;
 	for ( i = 0; i < len; i++ ) {
diff --git a/package.json b/package.json
index d86c379..7b9c2be 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
   "dependencies": {
     "@stdlib/assert-is-collection": "^0.2.2",
     "@stdlib/assert-is-function": "^0.2.2",
-    "@stdlib/string-format": "^0.2.2",
+    "@stdlib/error-tools-fmtprodmsg": "^0.2.2",
     "@stdlib/types": "^0.4.3",
     "@stdlib/error-tools-fmtprodmsg": "^0.2.2"
   },