diff --git a/libswscale/ops_dispatch.c b/libswscale/ops_dispatch.c
index 60ef405286..9abb3df8ec 100644
--- a/libswscale/ops_dispatch.c
+++ b/libswscale/ops_dispatch.c
@@ -408,9 +408,10 @@ static int compile(SwsGraph *graph, const SwsOpList *ops, SwsPass *input,
     if (ret < 0)
         goto fail;
 
+    const SwsCompiledOp *comp = &p->comp;
     const SwsFormat *dst = &ops->dst;
     if (p->comp.opaque) {
-        SwsCompiledOp c = p->comp;
+        SwsCompiledOp c = *comp;
         av_free(p);
         return ff_sws_graph_add_pass(graph, dst->format, dst->width, dst->height,
                                      input, c.slice_align, c.func_opaque,
@@ -426,8 +427,8 @@ static int compile(SwsGraph *graph, const SwsOpList *ops, SwsPass *input,
     p->exec_base = (SwsOpExec) {
         .width  = dst->width,
         .height = dst->height,
-        .block_size_in  = p->comp.block_size * p->pixel_bits_in  >> 3,
-        .block_size_out = p->comp.block_size * p->pixel_bits_out >> 3,
+        .block_size_in  = comp->block_size * p->pixel_bits_in  >> 3,
+        .block_size_out = comp->block_size * p->pixel_bits_out >> 3,
     };
 
     for (int i = 0; i < 4; i++) {
@@ -473,13 +474,13 @@ static int compile(SwsGraph *graph, const SwsOpList *ops, SwsPass *input,
     }
 
     ret = ff_sws_graph_add_pass(graph, dst->format, dst->width, dst->height,
-                                input, p->comp.slice_align, op_pass_run,
+                                input, comp->slice_align, op_pass_run,
                                 op_pass_setup, p, op_pass_free, output);
     if (ret < 0)
         return ret;
 
-    align_pass(input,   p->comp.block_size, p->comp.over_read,  p->pixel_bits_in);
-    align_pass(*output, p->comp.block_size, p->comp.over_write, p->pixel_bits_out);
+    align_pass(input,   comp->block_size, comp->over_read,  p->pixel_bits_in);
+    align_pass(*output, comp->block_size, comp->over_write, p->pixel_bits_out);
     return 0;
 
 fail: