diff --git a/src/ble/gatt_client.c b/src/ble/gatt_client.c
index ddfcc7dda..a2f84625a 100644
--- a/src/ble/gatt_client.c
+++ b/src/ble/gatt_client.c
@@ -162,7 +162,6 @@ static gatt_client_t * provide_context_for_conn_handle(hci_con_handle_t con_hand
     context = btstack_memory_gatt_client_get();
     if (!context) return NULL;
     // init state
-    memset(context, 0, sizeof(gatt_client_t));
     context->con_handle = con_handle;
     context->mtu = ATT_DEFAULT_MTU;
     if (mtu_exchange_enabled){
diff --git a/src/classic/avdtp.c b/src/classic/avdtp.c
index 78d0a24ba..5e8c46fdf 100644
--- a/src/classic/avdtp.c
+++ b/src/classic/avdtp.c
@@ -316,7 +316,6 @@ avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_contex
         log_error("Not enough memory to create connection");
         return NULL;
     }
-    memset(connection, 0, sizeof(avdtp_connection_t));
     connection->state = AVDTP_SIGNALING_CONNECTION_IDLE;
     connection->initiator_transaction_label = avdtp_get_next_initiator_transaction_label(context);
     connection->avdtp_cid = avdtp_get_next_avdtp_cid();
@@ -332,7 +331,6 @@ avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type
         log_error("Not enough memory to create stream endpoint");
         return NULL;
     }
-    memset(stream_endpoint, 0, sizeof(avdtp_stream_endpoint_t));
     stream_endpoint->sep.seid = avdtp_get_next_local_seid(context);
     stream_endpoint->sep.media_type = media_type;
     stream_endpoint->sep.type = sep_type;
diff --git a/src/classic/avrcp.c b/src/classic/avrcp.c
index f9956b0e4..2be681647 100644
--- a/src/classic/avrcp.c
+++ b/src/classic/avrcp.c
@@ -371,7 +371,6 @@ static avrcp_connection_t * avrcp_create_connection(bd_addr_t remote_addr, avrcp
         log_error("avrcp: not enough memory to create connection");
         return NULL;
     }
-    memset(connection, 0, sizeof(avrcp_connection_t));
     connection->state = AVCTP_CONNECTION_IDLE;
     connection->transaction_label = 0xFF;
     connection->max_num_fragments = 0xFF;
diff --git a/src/classic/avrcp_browsing_controller.c b/src/classic/avrcp_browsing_controller.c
index d9c469daf..23e4cc465 100644
--- a/src/classic/avrcp_browsing_controller.c
+++ b/src/classic/avrcp_browsing_controller.c
@@ -127,7 +127,6 @@ static void avrcp_emit_browsing_connection_closed(btstack_packet_handler_t callb
 
 static avrcp_browsing_connection_t * avrcp_browsing_create_connection(avrcp_connection_t * avrcp_connection){
     avrcp_browsing_connection_t * connection = btstack_memory_avrcp_browsing_connection_get();
-    memset(connection, 0, sizeof(avrcp_browsing_connection_t));
     connection->state = AVCTP_CONNECTION_IDLE;
     connection->transaction_label = 0xFF;
     avrcp_connection->avrcp_browsing_cid = avrcp_get_next_cid();
diff --git a/src/classic/avrcp_browsing_target.c b/src/classic/avrcp_browsing_target.c
index 039e38875..be2d077f1 100644
--- a/src/classic/avrcp_browsing_target.c
+++ b/src/classic/avrcp_browsing_target.c
@@ -198,7 +198,6 @@ static void avrcp_emit_browsing_connection_closed(btstack_packet_handler_t callb
 
 static avrcp_browsing_connection_t * avrcp_browsing_create_connection(avrcp_connection_t * avrcp_connection){
     avrcp_browsing_connection_t * connection = btstack_memory_avrcp_browsing_connection_get();
-    memset(connection, 0, sizeof(avrcp_browsing_connection_t));
     connection->state = AVCTP_CONNECTION_IDLE;
     connection->transaction_label = 0xFF;
     avrcp_connection->avrcp_browsing_cid = avrcp_get_next_cid();
diff --git a/src/classic/bnep.c b/src/classic/bnep.c
index 44bcc347b..415302fff 100644
--- a/src/classic/bnep.c
+++ b/src/classic/bnep.c
@@ -703,9 +703,6 @@ static bnep_channel_t * bnep_channel_create_for_addr(bd_addr_t addr)
         return NULL;
     }
 
-    /* Initialize the channel struct */
-    memset(channel, 0, sizeof(bnep_channel_t));
-
     channel->state = BNEP_CHANNEL_STATE_CLOSED;
     channel->max_frame_size = bnep_max_frame_size_for_l2cap_mtu(l2cap_max_mtu());
     bd_addr_copy(channel->remote_addr, addr);
@@ -1600,7 +1597,6 @@ uint8_t bnep_register_service(btstack_packet_handler_t packet_handler, uint16_t
     if (!service) {
         return BTSTACK_MEMORY_ALLOC_FAILED;
     }
-    memset(service, 0, sizeof(bnep_service_t));
 
     /* register with l2cap if not registered before, max MTU */
     l2cap_register_service(bnep_packet_handler, BLUETOOTH_PROTOCOL_BNEP, 0xffff, bnep_security_level);
diff --git a/src/classic/hfp.c b/src/classic/hfp.c
index 77620b17f..f82b14538 100644
--- a/src/classic/hfp.c
+++ b/src/classic/hfp.c
@@ -355,8 +355,6 @@ void hfp_reset_context_flags(hfp_connection_t * hfp_connection){
 static hfp_connection_t * create_hfp_connection_context(void){
     hfp_connection_t * hfp_connection = btstack_memory_hfp_connection_get();
     if (!hfp_connection) return NULL;
-    // init state
-    memset(hfp_connection,0, sizeof(hfp_connection_t));
 
     hfp_connection->state = HFP_IDLE;
     hfp_connection->call_state = HFP_CALL_IDLE;
diff --git a/src/classic/rfcomm.c b/src/classic/rfcomm.c
index f6e9565d5..e7e552e7e 100644
--- a/src/classic/rfcomm.c
+++ b/src/classic/rfcomm.c
@@ -284,9 +284,6 @@ static uint16_t rfcomm_max_frame_size_for_l2cap_mtu(uint16_t l2cap_mtu){
 }
 
 static void rfcomm_multiplexer_initialize(rfcomm_multiplexer_t *multiplexer){
-
-    memset(multiplexer, 0, sizeof(rfcomm_multiplexer_t));
-
     multiplexer->state = RFCOMM_MULTIPLEXER_CLOSED;
     multiplexer->fcon = 1;
     multiplexer->send_dm_for_dlci = 0;
@@ -363,10 +360,7 @@ static void rfcomm_channel_initialize(rfcomm_channel_t *channel, rfcomm_multiple
     
     // don't use 0 as channel id
     if (rfcomm_client_cid_generator == 0) ++rfcomm_client_cid_generator;
-    
-    // setup channel
-    memset(channel, 0, sizeof(rfcomm_channel_t));
-    
+        
     // set defaults for port configuration (even for services)
     rfcomm_rpn_data_set_defaults(&channel->rpn_data);
 
diff --git a/src/hci.c b/src/hci.c
index e5751f17f..a8804f039 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -186,7 +186,6 @@ static hci_connection_t * create_connection_for_bd_addr_and_type(bd_addr_t addr,
     log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type);
     hci_connection_t * conn = btstack_memory_hci_connection_get();
     if (!conn) return NULL;
-    memset(conn, 0, sizeof(hci_connection_t));
     bd_addr_copy(conn->address, addr);
     conn->address_type = addr_type;
     conn->con_handle = 0xffff;
diff --git a/src/l2cap.c b/src/l2cap.c
index 9bfd9a84d..25aebfc71 100644
--- a/src/l2cap.c
+++ b/src/l2cap.c
@@ -1799,9 +1799,6 @@ static l2cap_channel_t * l2cap_create_channel_entry(btstack_packet_handler_t pac
     if (!channel) {
         return NULL;
     }
-
-     // Init memory (make valgrind happy)
-    memset(channel, 0, sizeof(l2cap_channel_t));
         
     // fill in 
     channel->packet_handler = packet_handler;