diff --git a/tests/xharness/Harness.cs b/tests/xharness/Harness.cs
index 4068a77d3f..df302157bd 100644
--- a/tests/xharness/Harness.cs
+++ b/tests/xharness/Harness.cs
@@ -364,7 +364,8 @@ namespace xharness
 				var monoNativeInfo = new MonoNativeInfo (this, flavor);
 				var iosTestProject = new iOSTestProject (monoNativeInfo.ProjectPath, generateVariations: false) {
 					MonoNativeInfo = monoNativeInfo,
-					Name = monoNativeInfo.ProjectName
+					Name = monoNativeInfo.ProjectName,
+					SkipwatchOSARM64_32Variation = monoNativeInfo.ProjectName.Contains ("compat"),
 				};
 
 				IOSTestProjects.Add (iosTestProject);
diff --git a/tests/xharness/Jenkins.cs b/tests/xharness/Jenkins.cs
index 9b4a79e8ed..b61db2b48e 100644
--- a/tests/xharness/Jenkins.cs
+++ b/tests/xharness/Jenkins.cs
@@ -606,16 +606,18 @@ namespace xharness
 					buildWatch32.CloneTestProject (watchOSProject);
 					rv.Add (new RunDeviceTask (buildWatch32, Devices.ConnectedWatch) { Ignored = ignored || !IncludewatchOS, BuildOnly = project.BuildOnly });
 
-					var buildWatch64_32 = new XBuildTask {
-						Jenkins = this,
-						ProjectConfiguration = "Debug64_32",
-						ProjectPlatform = "iPhone",
-						Platform = TestPlatform.watchOS_64_32,
-						TestName = project.Name,
-						Ignored = true,
-					};
-					buildWatch64_32.CloneTestProject (watchOSProject);
-					rv.Add (new RunDeviceTask (buildWatch64_32, Devices.ConnectedWatch32_64.Where (d => d.IsSupported (project))) { Ignored = ignored || !IncludewatchOS, BuildOnly = project.BuildOnly });
+					if (!project.SkipwatchOSARM64_32Variation) {
+						var buildWatch64_32 = new XBuildTask {
+							Jenkins = this,
+							ProjectConfiguration = "Debug64_32",
+							ProjectPlatform = "iPhone",
+							Platform = TestPlatform.watchOS_64_32,
+							TestName = project.Name,
+							Ignored = true,
+						};
+						buildWatch64_32.CloneTestProject (watchOSProject);
+						rv.Add (new RunDeviceTask (buildWatch64_32, Devices.ConnectedWatch32_64.Where (d => d.IsSupported (project))) { Ignored = ignored || !IncludewatchOS, BuildOnly = project.BuildOnly });
+					}
 				}
 			}
 
diff --git a/tests/xharness/TestProject.cs b/tests/xharness/TestProject.cs
index 9d845c318f..abf985628d 100644
--- a/tests/xharness/TestProject.cs
+++ b/tests/xharness/TestProject.cs
@@ -150,6 +150,7 @@ namespace xharness
 	{
 		public bool SkipiOSVariation;
 		public bool SkipwatchOSVariation;
+		public bool SkipwatchOSARM64_32Variation;
 		public bool SkiptvOSVariation;
 		public bool BuildOnly;