diff --git a/Tests/Allocator.cs b/Tests/Allocator.cs
index cf2c53b..d311e2d 100644
--- a/Tests/Allocator.cs
+++ b/Tests/Allocator.cs
@@ -55,7 +55,7 @@ public static int[] Allocate(int quantity, double[] weights)
         var results = new int[weights.Length];
         for (int i = 0; i < weights.Length; i++)
         {
-            var allocation = (int)Math.Round(quantity * weights[i] / sumWeights, MidpointRounding.AwayFromZero);
+            var allocation = checked ((int)Math.Round(quantity * weights[i] / sumWeights, MidpointRounding.AwayFromZero));
             residual -= allocation;
             results[i] = allocation;
         }
diff --git a/Tests/Allocator_Tests.cs b/Tests/Allocator_Tests.cs
index 8a5c6c2..f582972 100644
--- a/Tests/Allocator_Tests.cs
+++ b/Tests/Allocator_Tests.cs
@@ -420,13 +420,8 @@ public void Allocate_NegativeExample()
     [Fact]
     public void Allocate_Exceptions()
     {
-        var quantity = 0;
-        var weights_i = 0.0;
-        var sumWeights = 0.0;
-        var allocation = (int)Math.Round(quantity * weights_i / sumWeights, MidpointRounding.AwayFromZero);
-        Assert.Equal(int.MinValue, allocation);
-        //Assert.Throws<Exception>(() => Allocator.Allocate(0, [0.0, 0.0, 0.0]));
-        //Assert.Throws<Exception>(() => Allocator.Allocate(42, [1.0, -2.0, 1.0, 0]));
+        Assert.Throws<Exception>(() => Allocator.Allocate(0, [0.0, 0.0, 0.0]));
+        Assert.Throws<Exception>(() => Allocator.Allocate(42, [1.0, -2.0, 1.0, 1e-30]));
     }
 
     [Fact]