diff --git a/libraries/render/src/render/Item.cpp b/libraries/render/src/render/Item.cpp
index 036c7d3a99..75c38ec615 100644
--- a/libraries/render/src/render/Item.cpp
+++ b/libraries/render/src/render/Item.cpp
@@ -34,6 +34,14 @@ const int Item::LAYER_3D = 1;
 const int Item::LAYER_3D_FRONT = 2;
 const int Item::LAYER_3D_HUD = 3;
 
+const uint8_t ItemKey::NUM_VISIBLE_MASK_INDICES { 4 };
+const uint8_t ItemKey::VISIBLE_MASK_ALL { 0x0F };
+const uint8_t ItemKey::VISIBLE_MASK_0 { 0x01 };
+const uint8_t ItemKey::VISIBLE_MASK_1 { 0x02 };
+const uint8_t ItemKey::VISIBLE_MASK_2 { 0x04 };
+const uint8_t ItemKey::VISIBLE_MASK_3 { 0x08 };
+
+
 void Item::Status::Value::setScale(float scale) {
     _scale = (std::numeric_limits<unsigned short>::max() -1) * 0.5f * (1.0f + std::max(std::min(scale, 1.0f), 0.0f));
  }
diff --git a/libraries/render/src/render/Item.h b/libraries/render/src/render/Item.h
index 3da7b07d7d..ebf3980489 100644
--- a/libraries/render/src/render/Item.h
+++ b/libraries/render/src/render/Item.h
@@ -63,12 +63,12 @@ public:
     // VISIBLE MASK is defined from several bits in the Key.
     // An Item can be visible in some mask bits and not other allowing for per view rendering
     // Beware that the visibility mask is the oposite of what stored in the key vals.
-    const static uint8_t NUM_VISIBLE_MASK_INDICES{ 4 };
-    const static uint8_t VISIBLE_MASK_ALL{ 0x0F };
-    const static uint8_t VISIBLE_MASK_0{ 0x01 };
-    const static uint8_t VISIBLE_MASK_1{ 0x02 };
-    const static uint8_t VISIBLE_MASK_2{ 0x04 };
-    const static uint8_t VISIBLE_MASK_3{ 0x08 };
+    const static uint8_t NUM_VISIBLE_MASK_INDICES;
+    const static uint8_t VISIBLE_MASK_ALL;
+    const static uint8_t VISIBLE_MASK_0;
+    const static uint8_t VISIBLE_MASK_1;
+    const static uint8_t VISIBLE_MASK_2;
+    const static uint8_t VISIBLE_MASK_3;
 
     // The key is the Flags
     Flags _flags;