diff --git a/libraries/render-utils/src/sdf_text3D.slv b/libraries/render-utils/src/sdf_text3D.slv
index a6cb43f038..9ac3b871f9 100644
--- a/libraries/render-utils/src/sdf_text3D.slv
+++ b/libraries/render-utils/src/sdf_text3D.slv
@@ -36,7 +36,7 @@ void main() {
     if (params.effect == 3) { // Shadow
         const int VERTICES_PER_QUAD = 4; // must match value in Font.cpp
         const float EPSILON = 0.001;
-        position.z += floor(gl_VertexID / VERTICES_PER_QUAD) * EPSILON;
+        position.z += float(gl_VertexID / VERTICES_PER_QUAD) * EPSILON;
     }
 
     TransformCamera cam = getTransformCamera();