diff --git a/SGPlayer/Classes/Core/SGVR/SGVRProjection.m b/SGPlayer/Classes/Core/SGVR/SGVRProjection.m
index 05d1cbfb..bda4d8f7 100644
--- a/SGPlayer/Classes/Core/SGVR/SGVRProjection.m
+++ b/SGPlayer/Classes/Core/SGVR/SGVRProjection.m
@@ -94,11 +94,18 @@ - (BOOL)matrixWithAspect:(Float64)aspect matrix1:(GLKMatrix4 *)matrix1
         modelMatrix = GLKMatrix4Multiply(modelMatrix, self.sensor.matrix);
     }
 #endif
+    // model
     modelMatrix = GLKMatrix4RotateY(modelMatrix, GLKMathDegreesToRadians(self.viewport.x) * (self.viewport.flipX ? -1 : 1));
-    GLKMatrix4 viewMatrix = GLKMatrix4MakeLookAt(0, 0, 0.0, 0, 0, -1000, 0, 1, 0);
-    GLKMatrix4 projectionMatrix = GLKMatrix4MakePerspective(GLKMathDegreesToRadians(self.viewport.degress), aspect, 0.1f, 400.0f);
+
+    // view
+    GLKMatrix4 viewMatrix = GLKMatrix4MakeLookAt(0, 0, 0, 0, 0, -1000, 0, 1, 0);
+    
+    // projection
+    GLKMatrix4 projectionMatrix = GLKMatrix4MakePerspective(GLKMathDegreesToRadians(90), aspect, 0.1f, 400.0f);
+    
     GLKMatrix4 modelViewProjectionMatrix = GLKMatrix4Multiply(projectionMatrix, viewMatrix);
     modelViewProjectionMatrix = GLKMatrix4Multiply(modelViewProjectionMatrix, modelMatrix);
+    
     *matrix1 = modelViewProjectionMatrix;
     self.lastMatrix1Available = YES;
     self.lastMatrix11 = modelViewProjectionMatrix;