diff --git a/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs b/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
index 3ec9d618b3a704..bea46968f3116c 100644
--- a/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
+++ b/src/libraries/System.Text.RegularExpressions/tests/Regex.Match.Tests.cs
@@ -1516,7 +1516,7 @@ public static IEnumerable<object[]> StressTestDeepNestingOfLoops_TestData()
         }
 
         [OuterLoop("Can take over 10 seconds")]
-        [Theory]
+        [ConditionalTheory(typeof(PlatformDetection), nameof(PlatformDetection.Is64BitProcess))] // consumes a lot of memory
         [MemberData(nameof(StressTestDeepNestingOfLoops_TestData))]
         public async Task StressTestDeepNestingOfLoops(RegexEngine engine, string begin, string inner, string end, RegexOptions options, string input, int pattern_repetition, int input_repetition)
         {