diff --git a/Schemas/configuration.json b/Schemas/configuration.json
index d2d041851..4ce900e5d 100644
--- a/Schemas/configuration.json
+++ b/Schemas/configuration.json
@@ -16,7 +16,6 @@
                     "exp_graphics_contexts",
                     "exp_text_node",
                     "exp_interface_state_coalesce",
-                    "exp_unfair_lock",
                     "exp_infer_layer_defaults",
                     "exp_collection_teardown",
                     "exp_framesetter_cache",
diff --git a/Source/ASExperimentalFeatures.h b/Source/ASExperimentalFeatures.h
index cc6d9cfe0..29939a556 100644
--- a/Source/ASExperimentalFeatures.h
+++ b/Source/ASExperimentalFeatures.h
@@ -20,17 +20,16 @@ typedef NS_OPTIONS(NSUInteger, ASExperimentalFeatures) {
   // will be used in all cases
   ASExperimentalTextNode = 1 << 0,                                          // exp_text_node
   ASExperimentalInterfaceStateCoalescing = 1 << 1,                          // exp_interface_state_coalesce
-  ASExperimentalUnfairLock = 1 << 2,                                        // exp_unfair_lock
-  ASExperimentalLayerDefaults = 1 << 3,                                     // exp_infer_layer_defaults
-  ASExperimentalCollectionTeardown = 1 << 4,                                // exp_collection_teardown
-  ASExperimentalFramesetterCache = 1 << 5,                                  // exp_framesetter_cache
-  ASExperimentalSkipClearData = 1 << 6,                                     // exp_skip_clear_data
-  ASExperimentalDidEnterPreloadSkipASMLayout = 1 << 7,                      // exp_did_enter_preload_skip_asm_layout
-  ASExperimentalDispatchApply = 1 << 8,                                     // exp_dispatch_apply
-  ASExperimentalDrawingGlobal = 1 << 9,                                     // exp_drawing_global
-  ASExperimentalOptimizeDataControllerPipeline = 1 << 10,                   // exp_optimize_data_controller_pipeline
-  ASExperimentalTraitCollectionDidChangeWithPreviousCollection = 1 << 11,   // exp_trait_collection_did_change_with_previous_collection
-  ASExperimentalDoNotCacheAccessibilityElements = 1 << 12,                  // exp_do_not_cache_accessibility_elements
+  ASExperimentalLayerDefaults = 1 << 2,                                     // exp_infer_layer_defaults
+  ASExperimentalCollectionTeardown = 1 << 3,                                // exp_collection_teardown
+  ASExperimentalFramesetterCache = 1 << 4,                                  // exp_framesetter_cache
+  ASExperimentalSkipClearData = 1 << 5,                                     // exp_skip_clear_data
+  ASExperimentalDidEnterPreloadSkipASMLayout = 1 << 6,                      // exp_did_enter_preload_skip_asm_layout
+  ASExperimentalDispatchApply = 1 << 7,                                     // exp_dispatch_apply
+  ASExperimentalDrawingGlobal = 1 << 8,                                     // exp_drawing_global
+  ASExperimentalOptimizeDataControllerPipeline = 1 << 9,                    // exp_optimize_data_controller_pipeline
+  ASExperimentalTraitCollectionDidChangeWithPreviousCollection = 1 << 10,   // exp_trait_collection_did_change_with_previous_collection
+  ASExperimentalDoNotCacheAccessibilityElements = 1 << 11 ,                  // exp_do_not_cache_accessibility_elements
   ASExperimentalFeatureAll = 0xFFFFFFFF
 };
 
diff --git a/Source/ASExperimentalFeatures.mm b/Source/ASExperimentalFeatures.mm
index 1ec5fb17d..e89aebe46 100644
--- a/Source/ASExperimentalFeatures.mm
+++ b/Source/ASExperimentalFeatures.mm
@@ -14,7 +14,6 @@
 {
   NSArray *allNames = ASCreateOnce((@[@"exp_text_node",
                                       @"exp_interface_state_coalesce",
-                                      @"exp_unfair_lock",
                                       @"exp_infer_layer_defaults",
                                       @"exp_collection_teardown",
                                       @"exp_framesetter_cache",
diff --git a/Source/Details/ASThread.h b/Source/Details/ASThread.h
index 501022e83..cb840e167 100644
--- a/Source/Details/ASThread.h
+++ b/Source/Details/ASThread.h
@@ -218,7 +218,7 @@ namespace AS {
       static dispatch_once_t onceToken;
       dispatch_once(&onceToken, ^{
         if (AS_AVAILABLE_IOS_TVOS(10, 10)) {
-          gMutex_unfair = ASActivateExperimentalFeature(ASExperimentalUnfairLock);
+          gMutex_unfair = YES;
         }
       });
       
diff --git a/Tests/ASConfigurationTests.mm b/Tests/ASConfigurationTests.mm
index 3a5dfff9c..083251adf 100644
--- a/Tests/ASConfigurationTests.mm
+++ b/Tests/ASConfigurationTests.mm
@@ -20,7 +20,6 @@
   ASExperimentalTextNode,
 #endif
   ASExperimentalInterfaceStateCoalescing,
-  ASExperimentalUnfairLock,
   ASExperimentalLayerDefaults,
   ASExperimentalCollectionTeardown,
   ASExperimentalFramesetterCache,
@@ -45,7 +44,6 @@ + (NSArray *)names {
   return @[
     @"exp_text_node",
     @"exp_interface_state_coalesce",
-    @"exp_unfair_lock",
     @"exp_infer_layer_defaults",
     @"exp_collection_teardown",
     @"exp_framesetter_cache",