diff --git a/include/tulips/stack/TCPv4.h b/include/tulips/stack/TCPv4.h
index b62ca86..108b6d0 100644
--- a/include/tulips/stack/TCPv4.h
+++ b/include/tulips/stack/TCPv4.h
@@ -64,8 +64,8 @@ static constexpr size_t USED HEADER_LEN = sizeof(Header);
 static constexpr uint16_t USED HEADER_OVERHEAD = ipv4::HEADER_LEN + HEADER_LEN;
 
 static constexpr uint16_t USED ATO = 40;
-static constexpr uint8_t USED RTO = 3;
 static constexpr uint16_t USED KTO = 5;
+static constexpr uint8_t USED RTO = 3;
 
 }
 
diff --git a/include/tulips/stack/tcpv4/Processor.h b/include/tulips/stack/tcpv4/Processor.h
index fd8189b..de151b4 100644
--- a/include/tulips/stack/tcpv4/Processor.h
+++ b/include/tulips/stack/tcpv4/Processor.h
@@ -253,22 +253,6 @@ class Processor : public transport::Processor
    */
   Status sendAck(Connection& e, const bool k);
 
-  /**
-   * Send a keep-alive probe.
-   *
-   * @param e the connection to keep-alive.
-   * @param s the segment to use.
-   *
-   * @return the status of the operation.
-   */
-  inline Status sendKeepAlive(Connection& e, Segment& s)
-  {
-    uint8_t* outdata = s.m_dat;
-    OUTTCP->flags = Flag::ACK;
-    OUTTCP->offset = 5;
-    return send(e, HEADER_LEN, s);
-  }
-
   /**
    * Respond to a connection request.
    *
diff --git a/src/stack/tcpv4/Processor.cpp b/src/stack/tcpv4/Processor.cpp
index 90c2ba3..c6ffade 100644
--- a/src/stack/tcpv4/Processor.cpp
+++ b/src/stack/tcpv4/Processor.cpp
@@ -437,12 +437,10 @@ Processor::onSlowTimer()
      * Handle keep-alive.
      */
     if (e.m_state == Connection::ESTABLISHED && HAS_KEEP_ALIVE(e)) {
-      m_log.debug("TCP4", "<", e.id(), "> check keep-alive");
       /*
        * Reset the live flag.
        */
       if (e.m_live) {
-        m_log.debug("TCP4", "<", e.id(), "> reset the live flag");
         e.m_live = false;
         e.m_ktm = KTO + 1;
         continue;
diff --git a/tests/tcp/keepalive.cpp b/tests/tcp/keepalive.cpp
index b6ffc58..13ac3ae 100644
--- a/tests/tcp/keepalive.cpp
+++ b/tests/tcp/keepalive.cpp
@@ -1,9 +1,9 @@
-#include "tulips/stack/TCPv4.h"
-#include "tulips/stack/tcpv4/Connection.h"
+#include <tulips/stack/TCPv4.h>
 #include <tulips/stack/ethernet/Processor.h>
 #include <tulips/stack/ethernet/Producer.h>
 #include <tulips/stack/ipv4/Processor.h>
 #include <tulips/stack/ipv4/Producer.h>
+#include <tulips/stack/tcpv4/Connection.h>
 #include <tulips/stack/tcpv4/Processor.h>
 #include <tulips/system/Compiler.h>
 #include <tulips/system/Logger.h>