diff --git a/libswscale/ops_chain.c b/libswscale/ops_chain.c
index 5d138a9e46..80162507b0 100644
--- a/libswscale/ops_chain.c
+++ b/libswscale/ops_chain.c
@@ -45,7 +45,7 @@ void ff_sws_op_chain_free(SwsOpChain *chain)
 }
 
 int ff_sws_op_chain_append(SwsOpChain *chain, SwsFuncPtr func,
-                           void (*free)(void *), SwsOpPriv priv)
+                           void (*free)(void *), const SwsOpPriv *priv)
 {
     const int idx = chain->num_impl;
     if (idx == SWS_MAX_OPS)
@@ -53,7 +53,7 @@ int ff_sws_op_chain_append(SwsOpChain *chain, SwsFuncPtr func,
 
     av_assert1(func);
     chain->impl[idx].cont = func;
-    chain->impl[idx + 1].priv = priv;
+    chain->impl[idx + 1].priv = *priv;
     chain->free[idx + 1] = free;
     chain->num_impl++;
     return 0;
@@ -231,7 +231,7 @@ int ff_sws_op_compile_tables(const SwsOpTable *const tables[], int num_tables,
     }
 
     chain->cpu_flags |= best_cpu_flags;
-    ret = ff_sws_op_chain_append(chain, best->func, best->free, priv);
+    ret = ff_sws_op_chain_append(chain, best->func, best->free, &priv);
     if (ret < 0) {
         if (best->free)
             best->free(&priv);
diff --git a/libswscale/ops_chain.h b/libswscale/ops_chain.h
index 777d8e13c1..ceff7e4e7e 100644
--- a/libswscale/ops_chain.h
+++ b/libswscale/ops_chain.h
@@ -90,7 +90,7 @@ void ff_sws_op_chain_free(SwsOpChain *chain);
 
 /* Returns 0 on success, or a negative error code. */
 int ff_sws_op_chain_append(SwsOpChain *chain, SwsFuncPtr func,
-                           void (*free)(void *), SwsOpPriv priv);
+                           void (*free)(void *), const SwsOpPriv *priv);
 
 typedef struct SwsOpEntry {
     /* Kernel metadata; reduced size subset of SwsOp */
diff --git a/libswscale/x86/ops.c b/libswscale/x86/ops.c
index b3fe5fb014..8704f77227 100644
--- a/libswscale/x86/ops.c
+++ b/libswscale/x86/ops.c
@@ -695,7 +695,7 @@ static int compile(SwsContext *ctx, SwsOpList *ops, SwsCompiledOp *out)
         SWS_DECL_FUNC(NAME);                                    \
         void NAME##_return(void);                               \
         ret = ff_sws_op_chain_append(chain, NAME##_return,      \
-                                     NULL, (SwsOpPriv) {0});    \
+                                     NULL, &(SwsOpPriv) {0});   \
         out->func = NAME;                                       \
     } while (0)