diff --git a/docs/migration-guides/jstat/benchmark/benchmark.max.js b/docs/migration-guides/jstat/benchmark/benchmark.max.js
index 93740f3da5ac..7a68437ba404 100644
--- a/docs/migration-guides/jstat/benchmark/benchmark.max.js
+++ b/docs/migration-guides/jstat/benchmark/benchmark.max.js
@@ -23,6 +23,7 @@
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var format = require( '@stdlib/string/format' );
 var randu = require( '@stdlib/random/base/randu' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
@@ -98,7 +99,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::jstat:max:len='+len, opts, f );
+		bench( format( '%s::jstat:max:len=%d', pkg, len ), opts, f );
 	}
 }
 
diff --git a/docs/migration-guides/jstat/benchmark/benchmark.min.js b/docs/migration-guides/jstat/benchmark/benchmark.min.js
index 905a725f0dae..b9f7d167ba50 100644
--- a/docs/migration-guides/jstat/benchmark/benchmark.min.js
+++ b/docs/migration-guides/jstat/benchmark/benchmark.min.js
@@ -25,6 +25,7 @@ var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
 var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
 var Float64Array = require( '@stdlib/array/float64' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var pkg = require( './../package.json' ).name;
@@ -98,7 +99,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::jstat:min:len='+len, opts, f );
+		bench( format( '%s::jstat:min:len=%d', pkg, len ), opts, f );
 	}
 }
 
diff --git a/docs/migration-guides/jstat/benchmark/benchmark.range.js b/docs/migration-guides/jstat/benchmark/benchmark.range.js
index 2df201800b78..21525a9b81bc 100644
--- a/docs/migration-guides/jstat/benchmark/benchmark.range.js
+++ b/docs/migration-guides/jstat/benchmark/benchmark.range.js
@@ -24,6 +24,7 @@ var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
+var format = require( '@stdlib/string/format' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -98,7 +99,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::jstat:range:len='+len, opts, f );
+		bench( format( '%s::jstat:range:len=%d', pkg, len ), opts, f );
 	}
 }
 
diff --git a/docs/migration-guides/jstat/benchmark/benchmark.sum.js b/docs/migration-guides/jstat/benchmark/benchmark.sum.js
index f3f39486c5d9..11935ce6ceec 100644
--- a/docs/migration-guides/jstat/benchmark/benchmark.sum.js
+++ b/docs/migration-guides/jstat/benchmark/benchmark.sum.js
@@ -25,6 +25,7 @@ var bench = require( '@stdlib/bench' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
 var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
 var Float64Array = require( '@stdlib/array/float64' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var pkg = require( './../package.json' ).name;
@@ -98,7 +99,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::jstat:sum:len='+len, opts, f );
+		bench( format( '%s::jstat:sum:len=%d', pkg, len ), opts, f );
 	}
 }