diff --git a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/stdev/lib/main.js b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/stdev/lib/main.js
index 7655e9eb7297..5759101e7cbe 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/stdev/lib/main.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/stdev/lib/main.js
@@ -56,7 +56,7 @@ var SQRT4MPI = sqrt( 4.0-PI );
 * // returns NaN
 */
 function stdev( sigma ) {
-	if ( isnan( sigma ) || sigma < 0 ) {
+	if ( isnan( sigma ) || sigma < 0.0 ) {
 		return NaN;
 	}
 	return SQRT4MPI * sigma / SQRT2;
diff --git a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/variance/lib/main.js b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/variance/lib/main.js
index dd063a2caf75..255c94513216 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/rayleigh/variance/lib/main.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/rayleigh/variance/lib/main.js
@@ -49,7 +49,7 @@ var PI = require( '@stdlib/constants/float64/pi' );
 * // returns NaN
 */
 function variance( sigma ) {
-	if ( isnan( sigma ) || sigma < 0 ) {
+	if ( isnan( sigma ) || sigma < 0.0 ) {
 		return NaN;
 	}
 	return ( 4.0-PI ) * sigma*sigma / 2.0;