diff --git a/src/gallium/drivers/v3d/v3d_resource.c b/src/gallium/drivers/v3d/v3d_resource.c
index da41872883b..201b3c16066 100644
--- a/src/gallium/drivers/v3d/v3d_resource.c
+++ b/src/gallium/drivers/v3d/v3d_resource.c
@@ -260,14 +260,12 @@ v3d_resource_transfer_map(struct pipe_context *pctx,
 
         v3d_map_usage_prep(pctx, prsc, usage);
 
-        trans = slab_alloc(&v3d->transfer_pool);
+        trans = slab_zalloc(&v3d->transfer_pool);
         if (!trans)
                 return NULL;
 
         /* XXX: Handle DONTBLOCK, DISCARD_RANGE, PERSISTENT, COHERENT. */
 
-        /* slab_alloc_st() doesn't zero: */
-        memset(trans, 0, sizeof(*trans));
         ptrans = &trans->base;
 
         pipe_resource_reference(&ptrans->resource, prsc);