diff --git a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.js
index 20e44ba6a7b0..cb0cf2a04100 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.js
@@ -27,6 +27,7 @@ var filledarrayBy = require( '@stdlib/array/filled-by' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var dnannsumpw = require( './../lib/dnannsumpw.js' );
 
@@ -107,7 +108,7 @@ 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 );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.native.js
index e783e0d5c12e..84152b8c78dd 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.native.js
@@ -29,6 +29,7 @@ var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -116,7 +117,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::native:len='+len, opts, f );
+		bench( format( '%s::native:len=%d', pkg, len ), opts, f );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.js
index 87a3494f4131..689c4613ef4e 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.js
@@ -27,6 +27,7 @@ var filledarrayBy = require( '@stdlib/array/filled-by' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var dnannsumpw = require( './../lib/ndarray.js' );
 
@@ -107,7 +108,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+':ndarray:len='+len, f );
+		bench( format( '%s:ndarray:len=%d', pkg, len ), f );
 	}
 }
 
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.native.js
index 7f4f4a8404a3..6bd596108b22 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dnannsumpw/benchmark/benchmark.ndarray.native.js
@@ -29,6 +29,7 @@ var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float64Array = require( '@stdlib/array/float64' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -116,7 +117,7 @@ function main() {
 	for ( i = min; i <= max; i++ ) {
 		len = pow( 10, i );
 		f = createBenchmark( len );
-		bench( pkg+'::native:ndarray:len='+len, opts, f );
+		bench( format( '%s::native:ndarray:len=%d', pkg, len ), opts, f );
 	}
 }