diff --git a/gsk/gpu/gskgpublitop.c b/gsk/gpu/gskgpublitop.c
index 91952e7342..b2baf07422 100644
--- a/gsk/gpu/gskgpublitop.c
+++ b/gsk/gpu/gskgpublitop.c
@@ -210,6 +210,8 @@ gsk_gpu_blit_op (GskGpuFrame                 *frame,
   GskGpuBlitOp *self;
 
   g_assert ((gsk_gpu_image_get_flags (src_image) & GSK_GPU_IMAGE_NO_BLIT) == 0);
+  g_assert (filter != GSK_GPU_BLIT_LINEAR || (gsk_gpu_image_get_flags (src_image) & GSK_GPU_IMAGE_FILTERABLE) == GSK_GPU_IMAGE_FILTERABLE);
+  g_assert ((gsk_gpu_image_get_flags (dest_image) & GSK_GPU_IMAGE_RENDERABLE) == GSK_GPU_IMAGE_RENDERABLE);
 
   self = (GskGpuBlitOp *) gsk_gpu_op_alloc (frame, &GSK_GPU_BLIT_OP_CLASS);