diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index 5e3a9f78db8..72c29345be6 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -6310,7 +6310,7 @@ static void write_event(struct radv_cmd_buffer *cmd_buffer,
 
 	radv_cs_add_buffer(cmd_buffer->device->ws, cs, event->bo);
 
-	ASSERTED unsigned cdw_max = radeon_check_space(cmd_buffer->device->ws, cs, 21);
+	ASSERTED unsigned cdw_max = radeon_check_space(cmd_buffer->device->ws, cs, 28);
 
 	/* Flags that only require a top-of-pipe event. */
 	VkPipelineStageFlags top_of_pipe_flags =