diff --git a/examples/z_query_sub.c b/examples/z_query_sub.c
index 96ac2049f..eddde1b16 100644
--- a/examples/z_query_sub.c
+++ b/examples/z_query_sub.c
@@ -25,7 +25,7 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 const char* kind_to_str(z_sample_kind_t kind);
 
-void data_handler(const z_loaned_sample_t* sample, void* arg) {
+void data_handler(z_loaned_sample_t* sample, void* arg) {
     z_view_string_t key_string;
     z_keyexpr_as_view_string(z_sample_keyexpr(sample), &key_string);
     z_owned_string_t payload_string;
diff --git a/examples/z_queryable_shm.c b/examples/z_queryable_shm.c
index b70b9a843..0ec351b8c 100644
--- a/examples/z_queryable_shm.c
+++ b/examples/z_queryable_shm.c
@@ -20,7 +20,7 @@ const char *keyexpr = "demo/example/zenoh-c-queryable";
 const char *value = "Queryable from C SHM!";
 z_view_keyexpr_t ke;
 
-void query_handler(const z_loaned_query_t *query, void *context) {
+void query_handler(z_loaned_query_t *query, void *context) {
     z_loaned_shm_provider_t *provider = (z_loaned_shm_provider_t *)context;
 
     z_view_string_t key_string;
diff --git a/examples/z_sub_liveliness.c b/examples/z_sub_liveliness.c
index b67a2d8b9..73b01582d 100644
--- a/examples/z_sub_liveliness.c
+++ b/examples/z_sub_liveliness.c
@@ -23,7 +23,7 @@ struct args_t {
 };
 struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
-void data_handler(const z_loaned_sample_t* sample, void* arg) {
+void data_handler(z_loaned_sample_t* sample, void* arg) {
     z_view_string_t key_string;
     z_keyexpr_as_view_string(z_sample_keyexpr(sample), &key_string);
     switch (z_sample_kind(sample)) {
diff --git a/examples/z_sub_shm.c b/examples/z_sub_shm.c
index f6a6fad7e..ce5f5b29a 100644
--- a/examples/z_sub_shm.c
+++ b/examples/z_sub_shm.c
@@ -17,7 +17,7 @@
 
 const char *kind_to_str(z_sample_kind_t kind);
 
-void data_handler(const z_loaned_sample_t *sample, void *arg) {
+void data_handler(z_loaned_sample_t *sample, void *arg) {
     z_view_string_t key_string;
     z_keyexpr_as_view_string(z_sample_keyexpr(sample), &key_string);