diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 83332747e2a..a4c32cf5f9f 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -46,7 +46,13 @@ static void si_emit_cp_dma(struct si_context *sctx, struct radeon_cmdbuf *cs, ui
 
    assert(sctx->screen->info.has_cp_dma);
    assert(size <= cp_dma_max_byte_count(sctx));
-   assert(size == 0 || (src_va && dst_va));
+
+   if (size) {
+      assert(dst_va);
+
+      if (!(flags & CP_DMA_CLEAR))
+         assert(src_va);
+   }
 
    if (sctx->gfx_level >= GFX9)
       command |= S_415_BYTE_COUNT_GFX9(size);