diff --git a/Aspects.m b/Aspects.m
index c907066..017cac3 100644
--- a/Aspects.m
+++ b/Aspects.m
@@ -6,6 +6,7 @@
 //
 
 #import "Aspects.h"
+#import <os/lock.h>
 #import <libkern/OSAtomic.h>
 #import <objc/runtime.h>
 #import <objc/message.h>
@@ -159,10 +160,15 @@ static BOOL aspect_remove(AspectIdentifier *aspect, NSError **error) {
 }
 
 static void aspect_performLocked(dispatch_block_t block) {
-    static OSSpinLock aspect_lock = OS_SPINLOCK_INIT;
+    /*static OSSpinLock aspect_lock = OS_SPINLOCK_INIT;
     OSSpinLockLock(&aspect_lock);
     block();
-    OSSpinLockUnlock(&aspect_lock);
+    OSSpinLockUnlock(&aspect_lock);*/
+    os_unfair_lock_t ascpect_lock = &(OS_UNFAIR_LOCK_INIT);
+    os_unfair_lock_lock(ascpect_lock);
+    block();
+    os_unfair_lock_unlock(ascpect_lock);
+    
 }
 
 static SEL aspect_aliasForSelector(SEL selector) {
diff --git a/Aspects.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/Aspects.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/Aspects.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>