diff --git a/src/gallium/drivers/d3d12/d3d12_screen.cpp b/src/gallium/drivers/d3d12/d3d12_screen.cpp
index db5e4a2b556..5b955364795 100644
--- a/src/gallium/drivers/d3d12/d3d12_screen.cpp
+++ b/src/gallium/drivers/d3d12/d3d12_screen.cpp
@@ -164,7 +164,8 @@ d3d12_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 1;
 
    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
-      return D3D12_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION;
+      /* Divide by 6 because this also applies to cubemaps */
+      return D3D12_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION / 6;
 
    case PIPE_CAP_DEPTH_CLIP_DISABLE:
       return 1;