diff --git a/Pod/Classes/CGGeometry+3D.swift b/Pod/Classes/CGGeometry+3D.swift
index e83e7d2..a001894 100644
--- a/Pod/Classes/CGGeometry+3D.swift
+++ b/Pod/Classes/CGGeometry+3D.swift
@@ -15,8 +15,3 @@ extension CGPoint {
     }
 }
 
-extension float3x3 {
-    func zNormalized() -> float3x3 {
-        return (Float(1) / self[2,2]) * self
-    }
-}
diff --git a/Pod/Classes/float3x3+3D.swift b/Pod/Classes/float3x3+3D.swift
index 2b3e54e..ba745cc 100644
--- a/Pod/Classes/float3x3+3D.swift
+++ b/Pod/Classes/float3x3+3D.swift
@@ -27,4 +27,8 @@ extension float3x3 {
         result[2,2] = 1
         return result
     }
+
+    func zNormalized() -> float3x3 {
+        return (Float(1) / self[2,2]) * self
+    }
 }