diff --git a/lib/factory.js b/lib/factory.js
index fe6c483..4c31a6d 100644
--- a/lib/factory.js
+++ b/lib/factory.js
@@ -22,7 +22,7 @@
 
 var isPlainObject = require( '@stdlib/assert-is-plain-object' );
 var assign = require( '@stdlib/object-assign' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 var RandomStream = require( './main.js' );
 
 
@@ -73,12 +73,12 @@ function factory( a, b, c, options ) {
 	nargs = arguments.length;
 	if ( nargs === 1 ) {
 		if ( !isPlainObject( a ) ) {
-			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', a ) );
+			throw new TypeError( format( '0rx2V', a ) );
 		}
 		opts = assign( {}, a );
 	} else if ( nargs > 3 ) {
 		if ( !isPlainObject( options ) ) {
-			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+			throw new TypeError( format( '0rx2V', options ) );
 		}
 		opts = assign( {}, options );
 	} else {
diff --git a/lib/main.js b/lib/main.js
index 600300d..1002933 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -33,7 +33,7 @@ var setReadWriteAccessor = require( '@stdlib/utils-define-read-write-accessor' )
 var rtriang = require( '@stdlib/random-base-triangular' ).factory;
 var string2buffer = require( '@stdlib/buffer-from-string' );
 var nextTick = require( '@stdlib/utils-next-tick' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 var DEFAULTS = require( './defaults.json' );
 var validate = require( './validate.js' );
 var debug = require( './debug.js' );
@@ -238,16 +238,16 @@ function RandomStream( a, b, c, options ) {
 		return new RandomStream( a, b, c );
 	}
 	if ( !isNumber( a ) || isnan( a ) ) {
-		throw new TypeError( format( 'invalid argument. First argument must be a number and not NaN. Value: `%s`.', a ) );
+		throw new TypeError( format( '0rx6v', a ) );
 	}
 	if ( !isNumber( b ) || isnan( b ) ) {
-		throw new TypeError( format( 'invalid argument. Second argument must be a number and not NaN. Value: `%s`.', b ) );
+		throw new TypeError( format( '0rx6w', b ) );
 	}
 	if ( !isNumber( c ) || isnan( c ) ) {
-		throw new TypeError( format( 'invalid argument. Third argument must be a number and not NaN. Value: `%s`.', c ) );
+		throw new TypeError( format( '0rx7C', c ) );
 	}
 	if ( !(a <= c && c <= b) ) {
-		throw new RangeError( format( 'invalid arguments. Parameters must satisfy the following condition: %s. a: `%f`. b: `%f`. c: `%f`.', 'a <= c <= b', a, b, c ) );
+		throw new RangeError( format( '0rx9C', 'a <= c <= b', a, b, c ) );
 	}
 	opts = assign( {}, DEFAULTS );
 	if ( arguments.length > 3 ) {
diff --git a/lib/object_mode.js b/lib/object_mode.js
index 0f7eefd..45ab7fe 100644
--- a/lib/object_mode.js
+++ b/lib/object_mode.js
@@ -22,7 +22,7 @@
 
 var isObject = require( '@stdlib/assert-is-plain-object' );
 var assign = require( '@stdlib/object-assign' );
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 var RandomStream = require( './main.js' );
 
 
@@ -72,7 +72,7 @@ function objectMode( a, b, c, options ) {
 	if ( arguments.length > 3 ) {
 		opts = options;
 		if ( !isObject( opts ) ) {
-			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', opts ) );
+			throw new TypeError( format( '0rx2V', opts ) );
 		}
 		opts = assign( {}, options );
 	} else {
diff --git a/lib/validate.js b/lib/validate.js
index 3a4eefd..0dc4962 100644
--- a/lib/validate.js
+++ b/lib/validate.js
@@ -27,7 +27,7 @@ var isNonNegative = require( '@stdlib/assert-is-nonnegative-number' ).isPrimitiv
 var isString = require( '@stdlib/assert-is-string' ).isPrimitive;
 var isPositiveInteger = require( '@stdlib/assert-is-positive-integer' ).isPrimitive;
 var isNonNegativeInteger = require( '@stdlib/assert-is-nonnegative-integer' ).isPrimitive;
-var format = require( '@stdlib/string-format' );
+var format = require( '@stdlib/error-tools-fmtprodmsg' );
 
 
 // MAIN //
@@ -62,42 +62,42 @@ var format = require( '@stdlib/string-format' );
 */
 function validate( opts, options ) {
 	if ( !isObject( options ) ) {
-		return new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+		return new TypeError( format( '0rx2V', options ) );
 	}
 	if ( hasOwnProp( options, 'sep' ) ) {
 		opts.sep = options.sep;
 		if ( !isString( opts.sep ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'sep', opts.sep ) );
+			return new TypeError( format( '0rx2W', 'sep', opts.sep ) );
 		}
 	}
 	if ( hasOwnProp( options, 'objectMode' ) ) {
 		opts.objectMode = options.objectMode;
 		if ( !isBoolean( opts.objectMode ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'objectMode', opts.objectMode ) );
+			return new TypeError( format( '0rx2o', 'objectMode', opts.objectMode ) );
 		}
 	}
 	if ( hasOwnProp( options, 'encoding' ) ) {
 		opts.encoding = options.encoding;
 		if ( !isString( opts.encoding ) && opts.encoding !== null ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a string or null. Option: `%s`.', 'encoding', opts.encoding ) );
+			return new TypeError( format( '0rx7n', 'encoding', opts.encoding ) );
 		}
 	}
 	if ( hasOwnProp( options, 'highWaterMark' ) ) {
 		opts.highWaterMark = options.highWaterMark;
 		if ( !isNonNegative( opts.highWaterMark ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a nonnegative number. Option: `%s`.', 'highWaterMark', opts.highWaterMark ) );
+			return new TypeError( format( '0rx4k', 'highWaterMark', opts.highWaterMark ) );
 		}
 	}
 	if ( hasOwnProp( options, 'iter' ) ) {
 		opts.iter = options.iter;
 		if ( !isNonNegativeInteger( opts.iter ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a nonnegative integer. Option: `%s`.', 'iter', opts.iter ) );
+			return new TypeError( format( '0rx2t', 'iter', opts.iter ) );
 		}
 	}
 	if ( hasOwnProp( options, 'siter' ) ) {
 		opts.siter = options.siter;
 		if ( !isPositiveInteger( opts.siter ) ) {
-			return new TypeError( format( 'invalid option. `%s` option must be a positive integer. Option: `%s`.', 'siter', opts.siter ) );
+			return new TypeError( format( '0rx3P', 'siter', opts.siter ) );
 		}
 	}
 	// Pass through options...
diff --git a/package.json b/package.json
index 9799fa2..e11d914 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
     "@stdlib/process-cwd": "^0.2.3",
     "@stdlib/random-base-triangular": "^0.2.2",
     "@stdlib/streams-node-stdout": "^0.2.3",
-    "@stdlib/string-format": "^0.2.3",
+    "@stdlib/error-tools-fmtprodmsg": "^0.2.3",
     "@stdlib/types": "^0.5.1",
     "@stdlib/utils-define-nonenumerable-property": "^0.2.3",
     "@stdlib/utils-define-nonenumerable-read-only-property": "^0.2.3",