diff --git a/src/ble/att_server.c b/src/ble/att_server.c
index 4c0a43eb8..5dd44ae60 100644
--- a/src/ble/att_server.c
+++ b/src/ble/att_server.c
@@ -347,6 +347,10 @@ static int att_server_process_validated_request(att_server_t * att_server){
 
         // callback with handle ATT_READ_RESPONSE_PENDING
         att_server_client_read_callback(att_server->connection.con_handle, ATT_READ_RESPONSE_PENDING, 0, NULL, 0);
+
+        // free reserved buffer
+        l2cap_release_packet_buffer();
+        return 0;
     }
 #endif
 
diff --git a/src/hci.h b/src/hci.h
index 93252b0ef..970e3c288 100644
--- a/src/hci.h
+++ b/src/hci.h
@@ -409,6 +409,7 @@ typedef enum {
     ATT_SERVER_REQUEST_RECEIVED,
     ATT_SERVER_W4_SIGNED_WRITE_VALIDATION,
     ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED,
+    ATT_SERVER_READ_RESPONSE_PENDING,
 } att_server_state_t;
 
 typedef struct {