diff --git a/DevProxy.Integration.Tests/BehaviorPluginsIntegrationTests.cs b/DevProxy.Integration.Tests/BehaviorPluginsIntegrationTests.cs
index 1e4fa357..3b0ee4b6 100644
--- a/DevProxy.Integration.Tests/BehaviorPluginsIntegrationTests.cs
+++ b/DevProxy.Integration.Tests/BehaviorPluginsIntegrationTests.cs
@@ -239,6 +239,47 @@ public void Latency_DelayRangeIncludesMaxMs()
         Assert.InRange(LatencyPlugin.GetDelay(random, int.MaxValue - 1, int.MaxValue), int.MaxValue - 1, int.MaxValue);
     }
 
+    [Fact]
+    public async Task Latency_InitializeFailsWhenMinMsGreaterThanMaxMs()
+    {
+        var config = PluginConfig.FromJson("""
+            { "minMs": 500, "maxMs": 100 }
+            """);
+        var plugin = new LatencyPlugin(
+            SharedHttpClient,
+            NullLogger<LatencyPlugin>.Instance,
+            KestrelProxyHarness.BuildUrlsToWatch("localhost"),
+            ProxyConfig,
+            config);
+
+        using var host = new PluginTestHost(ProxyConfig);
+        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
+            () => plugin.InitializeAsync(host.CreateInitArgs(), CancellationToken.None));
+
+        Assert.Contains("minMs (500)", ex.Message, StringComparison.Ordinal);
+        Assert.Contains("maxMs (100)", ex.Message, StringComparison.Ordinal);
+        Assert.False(plugin.Enabled);
+    }
+
+    [Fact]
+    public async Task Latency_InitializeSucceedsWhenMinMsEqualsMaxMs()
+    {
+        var config = PluginConfig.FromJson("""
+            { "minMs": 100, "maxMs": 100 }
+            """);
+        var plugin = new LatencyPlugin(
+            SharedHttpClient,
+            NullLogger<LatencyPlugin>.Instance,
+            KestrelProxyHarness.BuildUrlsToWatch("localhost"),
+            ProxyConfig,
+            config);
+
+        using var host = new PluginTestHost(ProxyConfig);
+        await plugin.InitializeAsync(host.CreateInitArgs(), CancellationToken.None);
+
+        Assert.True(plugin.Enabled);
+    }
+
     [Fact]
     public async Task RateLimiting_ThrottlesOnceResourcesAreExhausted()
     {
diff --git a/DevProxy.Plugins/Behavior/LatencyPlugin.cs b/DevProxy.Plugins/Behavior/LatencyPlugin.cs
index a892b042..3740e6c0 100644
--- a/DevProxy.Plugins/Behavior/LatencyPlugin.cs
+++ b/DevProxy.Plugins/Behavior/LatencyPlugin.cs
@@ -32,6 +32,17 @@ public sealed class LatencyPlugin(
 
     public override string Name => nameof(LatencyPlugin);
 
+    public override async Task InitializeAsync(InitArgs e, CancellationToken cancellationToken)
+    {
+        await base.InitializeAsync(e, cancellationToken);
+
+        if (Configuration.MinMs > Configuration.MaxMs)
+        {
+            Enabled = false;
+            throw new InvalidOperationException($"{Name}: minMs ({Configuration.MinMs}) must be less than or equal to maxMs ({Configuration.MaxMs}).");
+        }
+    }
+
     // HTTP: Add latency before request is forwarded
     public override async Task BeforeRequestAsync(ProxyRequestArgs e, CancellationToken cancellationToken)
     {