diff --git a/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.js b/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.js
index a3e1aed43c00..8546ff9d5c4a 100644
--- a/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.js
@@ -21,6 +21,7 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
+var format = require( '@stdlib/string/format' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var f32 = require( '@stdlib/number/float64/base/to-float32' );
@@ -63,7 +64,7 @@ bench( pkg, function benchmark( b ) {
 	b.end();
 });
 
-bench( pkg+'::built-in', opts, function benchmark( b ) {
+bench( format( '%s::built-in', pkg ), opts, function benchmark( b ) {
 	var opts;
 	var x;
 	var y;
diff --git a/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.native.js
index e869ba950de2..c33a87d79eaf 100644
--- a/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/atanhf/benchmark/benchmark.native.js
@@ -22,6 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
+var format = require( '@stdlib/string/format' );
 var uniform = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -38,7 +39,7 @@ var opts = {
 
 // MAIN //
 
-bench( pkg+'::native', opts, function benchmark( b ) {
+bench( format( '%s::native', pkg ), opts, function benchmark( b ) {
 	var opts;
 	var x;
 	var y;