diff --git a/IDE/STM32Cube/wolfssl_example.c b/IDE/STM32Cube/wolfssl_example.c
index 8347ed4dc..c359d53eb 100644
--- a/IDE/STM32Cube/wolfssl_example.c
+++ b/IDE/STM32Cube/wolfssl_example.c
@@ -595,9 +595,9 @@ static int ClientMemSend(info_t* info, char* buf, int sz)
 
 #ifndef BENCH_USE_NONBLOCK
     /* check for overflow */
-    if (info->to_client.write_idx + sz > MEM_BUFFER_SZ) {
+    if (info->to_server.write_idx + sz > MEM_BUFFER_SZ) {
         printf("ClientMemSend overflow %d %d %d\n",
-            info->to_client.write_idx, sz, MEM_BUFFER_SZ);
+            info->to_server.write_idx, sz, MEM_BUFFER_SZ);
         osSemaphoreRelease(info->server.mutex);
         return -1;
     }
diff --git a/examples/benchmark/tls_bench.c b/examples/benchmark/tls_bench.c
index 9dc8b810b..889ec4864 100644
--- a/examples/benchmark/tls_bench.c
+++ b/examples/benchmark/tls_bench.c
@@ -412,8 +412,8 @@ static int ClientMemSend(info_t* info, char* buf, int sz)
 
 #ifndef BENCH_USE_NONBLOCK
     /* check for overflow */
-    if (info->to_client.write_idx + sz > MEM_BUFFER_SZ) {
-        fprintf(stderr, "ClientMemSend overflow %d %d %d\n", info->to_client.write_idx, sz, MEM_BUFFER_SZ);
+    if (info->to_server.write_idx + sz > MEM_BUFFER_SZ) {
+        fprintf(stderr, "ClientMemSend overflow %d %d %d\n", info->to_server.write_idx, sz, MEM_BUFFER_SZ);
         pthread_mutex_unlock(&info->to_server.mutex);
         return -1;
     }