diff --git a/lib/node_modules/@stdlib/assert/is-almost-equal-complex128array/benchmark/benchmark.length.js b/lib/node_modules/@stdlib/assert/is-almost-equal-complex128array/benchmark/benchmark.length.js
index cf8260fb1c64..0ac5991141bf 100644
--- a/lib/node_modules/@stdlib/assert/is-almost-equal-complex128array/benchmark/benchmark.length.js
+++ b/lib/node_modules/@stdlib/assert/is-almost-equal-complex128array/benchmark/benchmark.length.js
@@ -25,6 +25,7 @@ var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
 var pow = require( '@stdlib/math/base/special/pow' );
 var zeroTo = require( '@stdlib/array/base/zero-to' );
 var Complex128Array = require( '@stdlib/array/complex128' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var isAlmostEqualComplex128Array = require( './../lib' );
 
@@ -90,7 +91,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+':len='+len, f );
+		bench( format( '%s:len=%d', pkg, len ), f );
 	}
 }