diff --git a/src/libraries/System.Runtime/tests/System/Attributes.cs b/src/libraries/System.Runtime/tests/System/Attributes.cs
index 00c7997c5f6d4b..d0b474f3110821 100644
--- a/src/libraries/System.Runtime/tests/System/Attributes.cs
+++ b/src/libraries/System.Runtime/tests/System/Attributes.cs
@@ -221,7 +221,7 @@ public static void GetCustomAttributes_Interface()
             Assert.True(typeof(ExampleWithAttribute).GetCustomAttributes(typeof(INameable), inherit: false)[0] is NameableAttribute);
         }
 
-        [Fact]
+        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsReflectionEmitSupported))]
         [SkipOnMono("Mono does not support getting DynamicMethod attributes via Attribute.GetCustomAttributes()")]
         public static void GetCustomAttributes_DynamicMethod()
         {
diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index 344e383b58cf84..0d462339b390c7 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -382,6 +382,7 @@
     <!-- Run only a small randomly chosen set of passing test suites -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)*\tests\**\*.Tests.csproj" />
     <ProjectExclusions Remove="$(MSBuildThisFileDirectory)System.Collections\tests\System.Collections.Tests.csproj" />
+    <ProjectExclusions Remove="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Tests.csproj" />
   </ItemGroup>
 
   <ItemGroup>