diff --git a/src/mono/browser/debugger/DebuggerTestSuite/BreakpointTests.cs b/src/mono/browser/debugger/DebuggerTestSuite/BreakpointTests.cs
index 6dc3bc05623072..b5e10eec917f15 100644
--- a/src/mono/browser/debugger/DebuggerTestSuite/BreakpointTests.cs
+++ b/src/mono/browser/debugger/DebuggerTestSuite/BreakpointTests.cs
@@ -172,7 +172,7 @@ await EvaluateAndCheck(
 
                     foreach (var frame in pause_location["callFrames"])
                     {
-                        Assert.Equal(false, frame["url"].Value<string>().Contains(".wasm"));
+                        Assert.Equal(false, frame["url"].Value<string>().EndsWith(".wasm", StringComparison.Ordinal));
                         Assert.Equal(false, frame["url"].Value<string>().Contains("wasm://"));
                     }
                     return Task.CompletedTask;