diff --git a/libraries/graphics/src/graphics/Material.slh b/libraries/graphics/src/graphics/Material.slh
index bdb87ff014..f9f4144748 100644
--- a/libraries/graphics/src/graphics/Material.slh
+++ b/libraries/graphics/src/graphics/Material.slh
@@ -14,6 +14,7 @@
 // The material values (at least the material key) must be precisely bitwise accurate
 // to what is provided by the uniform buffer, or the material key has the wrong bits
 #ifdef GL_ES
+precision highp float;
 #define BITFIELD highp int
 #define PRECISIONQ highp
 #else
@@ -70,5 +71,7 @@ const BITFIELD OCCLUSION_MAP_BIT             = 0x00004000;
 const BITFIELD LIGHTMAP_MAP_BIT              = 0x00008000;
 const BITFIELD SCATTERING_MAP_BIT            = 0x00010000;
 
-
+#ifdef GL_ES
+precision lowp float;
+#endif
 <@endif@>