diff --git a/TNC/SerialPort.cpp b/TNC/SerialPort.cpp
index a2ce989..36685bd 100644
--- a/TNC/SerialPort.cpp
+++ b/TNC/SerialPort.cpp
@@ -81,7 +81,6 @@ extern "C" void startSerialTask(void const* arg)
         }
 
         uint8_t c = evt.value.v;
-        INFO("%02x - %c", c, c);
         switch (state) {
         case WAIT_FBEGIN:
             if (c == FEND) state = WAIT_FRAME_TYPE;
@@ -107,6 +106,7 @@ extern "C" void startSerialTask(void const* arg)
                     uint32_t delay = (last_sent_time + 50) - current_sent_time;
                     osDelay(delay);
                 }
+                last_sent_time = current_sent_time;
                 frame = hdlc::acquire_wait();
                 state = WAIT_FBEGIN;
                 break;
@@ -132,7 +132,7 @@ extern "C" void startSerialTask(void const* arg)
                 if (not frame->push_back(FEND)) {
                     hdlc::release(frame);
                     state = WAIT_FBEGIN;  // Drop frame;
-                    frame = hdlc::acquire();
+                    frame = hdlc::acquire_wait();
                 }
                 break;
             default: