diff --git a/MotionDetection.xcodeproj/project.pbxproj b/MotionDetection.xcodeproj/project.pbxproj
index 32e4e98..8b24999 100644
--- a/MotionDetection.xcodeproj/project.pbxproj
+++ b/MotionDetection.xcodeproj/project.pbxproj
@@ -236,7 +236,7 @@
 		3E0EFF0D18C85C5400F9C33B /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0500;
+				LastUpgradeCheck = 0510;
 				ORGANIZATIONNAME = "Artur Mkrtchyan";
 				TargetAttributes = {
 					3E0EFF3518C85C5400F9C33B = {
@@ -379,8 +379,9 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
-				ONLY_ACTIVE_ARCH = YES;
+				ONLY_ACTIVE_ARCH = NO;
 				SDKROOT = iphoneos;
+				VALID_ARCHS = "armv7 armv7s";
 			};
 			name = Debug;
 		};
@@ -414,6 +415,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
+				VALID_ARCHS = "armv7 armv7s";
 			};
 			name = Release;
 		};
diff --git a/MotionDetection/ViewController.m b/MotionDetection/ViewController.m
index 978037a..98faa67 100644
--- a/MotionDetection/ViewController.m
+++ b/MotionDetection/ViewController.m
@@ -45,7 +45,7 @@ - (void)viewDidLoad
 	// Do any additional setup after loading the view, typically from a nib.
 
     [SOMotionDetector sharedInstance].delegate = self;
-    [SOMotionDetector sharedInstance].useM7IfAvailable = self; //
+    [SOMotionDetector sharedInstance].useM7IfAvailable = YES; //Use M7 chip if available, otherwise use lib's algorithm
     [[SOMotionDetector sharedInstance] startDetection];
 
 }
diff --git a/SOMotionDetector/SOMotionDetector.h b/SOMotionDetector/SOMotionDetector.h
index 23f2d65..b93e59e 100644
--- a/SOMotionDetector/SOMotionDetector.h
+++ b/SOMotionDetector/SOMotionDetector.h
@@ -71,7 +71,7 @@ typedef enum
  * Set this parameter before calling startDetection method.
  * Available only on devices that have M7 chip. At this time only the iPhone 5S, the iPad Air and iPad mini with retina display have the M7 coprocessor.
  */
-@property (nonatomic) BOOL useM7IfAvailable;
+@property (nonatomic) BOOL useM7IfAvailable NS_AVAILABLE_IOS(7_0);
 
 
 /**