diff --git a/drivers/gpu/drm/i915/i915_vgpu.h b/drivers/gpu/drm/i915/i915_vgpu.h
index 0db9ccf32605ec481fd95082aa76a970b9df6050..97a88b5f6a260013c6d0f315b4bc297fd4d2ab26 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.h
+++ b/drivers/gpu/drm/i915/i915_vgpu.h
@@ -32,7 +32,7 @@
  * The following structure pages are defined in GEN MMIO space
  * for virtualization. (One page for now)
  */
-#define VGT_MAGIC         0x4776544776544776	/* 'vGTvGTvG' */
+#define VGT_MAGIC         0x4776544776544776ULL	/* 'vGTvGTvG' */
 #define VGT_VERSION_MAJOR 1
 #define VGT_VERSION_MINOR 0