diff --git a/FastRng/Double/Distributions/ChiSquare.cs b/FastRng/Double/Distributions/ChiSquare.cs
index 2d5a62d..3bc46bb 100644
--- a/FastRng/Double/Distributions/ChiSquare.cs
+++ b/FastRng/Double/Distributions/ChiSquare.cs
@@ -25,7 +25,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             return await this.Random.NextNumber(new Gamma{ Shape = 0.5 * this.DegreesOfFreedom, Scale = 2.0 }, token);
         }
diff --git a/FastRng/Double/Distributions/Exponential.cs b/FastRng/Double/Distributions/Exponential.cs
index 27467e9..f75f0cf 100644
--- a/FastRng/Double/Distributions/Exponential.cs
+++ b/FastRng/Double/Distributions/Exponential.cs
@@ -25,7 +25,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             if(this.Mean == 1.0)
                 return -Math.Log(await this.Random.GetUniform(token));
diff --git a/FastRng/Double/Distributions/Gamma.cs b/FastRng/Double/Distributions/Gamma.cs
index ffd0c0f..60be1d5 100644
--- a/FastRng/Double/Distributions/Gamma.cs
+++ b/FastRng/Double/Distributions/Gamma.cs
@@ -29,7 +29,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
             
             // Implementation based on "A Simple Method for Generating Gamma Variables"
             // by George Marsaglia and Wai Wan Tsang.  ACM Transactions on Mathematical Software
diff --git a/FastRng/Double/Distributions/InverseGamma.cs b/FastRng/Double/Distributions/InverseGamma.cs
index 70cd441..305dc08 100644
--- a/FastRng/Double/Distributions/InverseGamma.cs
+++ b/FastRng/Double/Distributions/InverseGamma.cs
@@ -27,7 +27,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
             
             var gammaDist = new Gamma{ Shape = this.Shape, Scale = 1.0 / this.Scale };
             return 1.0 / await this.Random.NextNumber(gammaDist, token);
diff --git a/FastRng/Double/Distributions/Laplace.cs b/FastRng/Double/Distributions/Laplace.cs
index 3921101..26eb270 100644
--- a/FastRng/Double/Distributions/Laplace.cs
+++ b/FastRng/Double/Distributions/Laplace.cs
@@ -15,7 +15,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             var value = await this.Random.GetUniform(token);
             
diff --git a/FastRng/Double/Distributions/LogNormal.cs b/FastRng/Double/Distributions/LogNormal.cs
index 3612552..65b3302 100644
--- a/FastRng/Double/Distributions/LogNormal.cs
+++ b/FastRng/Double/Distributions/LogNormal.cs
@@ -26,7 +26,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             var normal = await this.Random.NextNumber(new Normal {Mean = this.Mu, StandardDeviation = this.Sigma}, token);
             return Math.Exp(normal);
diff --git a/FastRng/Double/Distributions/Normal.cs b/FastRng/Double/Distributions/Normal.cs
index 3d05b7a..b7b4035 100644
--- a/FastRng/Double/Distributions/Normal.cs
+++ b/FastRng/Double/Distributions/Normal.cs
@@ -27,7 +27,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             var u1 = await this.Random.GetUniform(token);
             var u2 = await this.Random.GetUniform(token);
diff --git a/FastRng/Double/Distributions/StudentT.cs b/FastRng/Double/Distributions/StudentT.cs
index 1ee1ac9..b605204 100644
--- a/FastRng/Double/Distributions/StudentT.cs
+++ b/FastRng/Double/Distributions/StudentT.cs
@@ -26,7 +26,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             var normal = await this.Random.NextNumber(NORMAL_DISTRIBUTED, token);
             var chiSquare = await this.Random.NextNumber(new ChiSquare {DegreesOfFreedom = this.DegreesOfFreedom}, token);
diff --git a/FastRng/Double/Distributions/Uniform.cs b/FastRng/Double/Distributions/Uniform.cs
index 784464d..49e92f7 100644
--- a/FastRng/Double/Distributions/Uniform.cs
+++ b/FastRng/Double/Distributions/Uniform.cs
@@ -7,6 +7,6 @@ namespace FastRng.Double.Distributions
     {
         public IRandom Random { get; set; }
         
-        public async ValueTask<double> GetDistributedValue(CancellationToken token = default) => this.Random == null ? System.Double.NaN : await this.Random.GetUniform(token);
+        public async ValueTask<double> GetDistributedValue(CancellationToken token = default) => this.Random == null ? double.NaN : await this.Random.GetUniform(token);
     }
 }
\ No newline at end of file
diff --git a/FastRng/Double/Distributions/Weibull.cs b/FastRng/Double/Distributions/Weibull.cs
index fdc0c32..636798e 100644
--- a/FastRng/Double/Distributions/Weibull.cs
+++ b/FastRng/Double/Distributions/Weibull.cs
@@ -38,7 +38,7 @@ namespace FastRng.Double.Distributions
         public async ValueTask<double> GetDistributedValue(CancellationToken token = default)
         {
             if (this.Random == null)
-                return System.Double.NaN;
+                return double.NaN;
 
             var value = await this.Random.GetUniform(token);
             return this.Scale * Math.Pow(-Math.Log(value), 1.0 / this.Shape);