diff --git a/ARSampleApp.xcodeproj/project.pbxproj b/ARSampleApp.xcodeproj/project.pbxproj
index e88c7bf..df6c885 100644
--- a/ARSampleApp.xcodeproj/project.pbxproj
+++ b/ARSampleApp.xcodeproj/project.pbxproj
@@ -94,7 +94,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0900;
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 0920;
 				ORGANIZATIONNAME = "Droids On Roids";
 				TargetAttributes = {
 					E5D125CF1F17672200F95BA0 = {
@@ -186,6 +186,8 @@
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
@@ -241,6 +243,8 @@
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
@@ -316,6 +320,7 @@
 				E5D125E61F17672200F95BA0 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};
diff --git a/ARSampleApp/ViewController.swift b/ARSampleApp/ViewController.swift
index 7ac279a..3754e49 100644
--- a/ARSampleApp/ViewController.swift
+++ b/ARSampleApp/ViewController.swift
@@ -19,7 +19,7 @@ final class ViewController: UIViewController, ARSCNViewDelegate {
     
     let session = ARSession()
     let vectorZero = SCNVector3()
-    let sessionConfig: ARSessionConfiguration = ARWorldTrackingSessionConfiguration()
+    let sessionConfig: ARConfiguration = ARWorldTrackingConfiguration()
     var measuring = false
     var startValue = SCNVector3()
     var endValue = SCNVector3()