diff --git a/src/amd/vulkan/radv_private.h b/src/amd/vulkan/radv_private.h
index f625ba54013..d305a3827b6 100644
--- a/src/amd/vulkan/radv_private.h
+++ b/src/amd/vulkan/radv_private.h
@@ -1879,7 +1879,7 @@ struct radv_vertex_input_info {
 };
 
 struct radv_input_assembly_info {
-   uint32_t primitive_topology;
+   uint8_t primitive_topology; /* VkPrimitiveTopology */
    bool primitive_restart_enable;
 };