diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 4e0a2d86a7268..1c19a65e65533 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -1199,7 +1199,7 @@ static ssize_t current_memory_partition_show(
 	enum amdgpu_memory_partition mode;
 
 	mode = adev->gmc.gmc_funcs->query_mem_partition_mode(adev);
-	if ((mode > ARRAY_SIZE(nps_desc)) ||
+	if ((mode >= ARRAY_SIZE(nps_desc)) ||
 	    (BIT(mode) & AMDGPU_ALL_NPS_MASK) != BIT(mode))
 		return sysfs_emit(buf, "UNKNOWN\n");