diff --git a/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.js
index 89278d4fcfd5..c1e1fc6a0579 100644
--- a/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.js
+++ b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.js
@@ -25,6 +25,7 @@ var randu = require( '@stdlib/random/base/randu' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float32Array = require( '@stdlib/array/float32' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var snanvariancetk = require( './../lib/snanvariancetk.js' );
 
@@ -99,7 +100,7 @@ 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/stats/base/snanvariancetk/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.native.js
index 463cd33b3e76..b3e7bdd609c1 100644
--- a/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.native.js
+++ b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.native.js
@@ -27,6 +27,7 @@ var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float32Array = require( '@stdlib/array/float32' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -108,7 +109,7 @@ 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/stats/base/snanvariancetk/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.js
index 52104566a644..314071c6bbf4 100644
--- a/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.js
+++ b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.js
@@ -25,6 +25,7 @@ var randu = require( '@stdlib/random/base/randu' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float32Array = require( '@stdlib/array/float32' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 var snanvariancetk = require( './../lib/ndarray.js' );
 
@@ -99,7 +100,7 @@ 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/stats/base/snanvariancetk/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.native.js
index 4cda4f519db9..4436e83ef179 100644
--- a/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.native.js
+++ b/lib/node_modules/@stdlib/stats/base/snanvariancetk/benchmark/benchmark.ndarray.native.js
@@ -27,6 +27,7 @@ var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var Float32Array = require( '@stdlib/array/float32' );
 var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
 var pkg = require( './../package.json' ).name;
 
 
@@ -108,7 +109,7 @@ 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 );
 	}
 }