diff --git a/MotionDetection/MotionDetection-Prefix.pch b/MotionDetection/MotionDetection-Prefix.pch
index 82a2bb4..858c64c 100644
--- a/MotionDetection/MotionDetection-Prefix.pch
+++ b/MotionDetection/MotionDetection-Prefix.pch
@@ -10,6 +10,9 @@
 #warning "This project uses features only available in iOS SDK 5.0 and later."
 #endif
 
+#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
+
+
 #ifdef __OBJC__
     #import <UIKit/UIKit.h>
     #import <Foundation/Foundation.h>
diff --git a/MotionDetection/ViewController.m b/MotionDetection/ViewController.m
index 98faa67..89d9cde 100644
--- a/MotionDetection/ViewController.m
+++ b/MotionDetection/ViewController.m
@@ -45,7 +45,10 @@ - (void)viewDidLoad
 	// Do any additional setup after loading the view, typically from a nib.
 
     [SOMotionDetector sharedInstance].delegate = self;
-    [SOMotionDetector sharedInstance].useM7IfAvailable = YES; //Use M7 chip if available, otherwise use lib's algorithm
+    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))
+    {
+        [SOMotionDetector sharedInstance].useM7IfAvailable = YES; //Use M7 chip if available, otherwise use lib's algorithm
+    }
     [[SOMotionDetector sharedInstance] startDetection];
 
 }