diff --git a/rtcp.c b/rtcp.c
index 0426010..4008633 100644
--- a/rtcp.c
+++ b/rtcp.c
@@ -50,7 +50,7 @@ int cSatipRtcp::GetApplicationOffset(int *lengthP)
         //unsigned int st = bufferM[offset] & 0x1F;
         // Payload type
         unsigned int pt = bufferM[offset + 1] & 0xFF;
-        // Lenght
+        // Length
         unsigned int length = ((bufferM[offset + 2] & 0xFF) << 8) | (bufferM[offset + 3] & 0xFF);
         // Convert it to bytes
         length = (length + 1) * 4;
diff --git a/rtcp.h b/rtcp.h
index 953707f..9b31241 100644
--- a/rtcp.h
+++ b/rtcp.h
@@ -20,7 +20,7 @@ private:
   cSatipTunerIf &tunerM;
   unsigned int bufferLenM;
   unsigned char *bufferM;
-  int GetApplicationOffset(int *lenghtP);
+  int GetApplicationOffset(int *lengthP);
 
 public:
   cSatipRtcp(cSatipTunerIf &tunerP);
diff --git a/rtp.c b/rtp.c
index 741c7fe..3d033f9 100644
--- a/rtp.c
+++ b/rtp.c
@@ -51,7 +51,7 @@ void cSatipRtp::Close(void)
      }
 }
 
-int cSatipRtp::GetHeaderLenght(unsigned char *bufferP, unsigned int lengthP)
+int cSatipRtp::GetHeaderLength(unsigned char *bufferP, unsigned int lengthP)
 {
   debug16("%s (, %d) [device %d]", __PRETTY_FUNCTION__, lengthP, tunerM.GetId());
   unsigned int headerlen = 0;
@@ -88,7 +88,7 @@ int cSatipRtp::GetHeaderLenght(unsigned char *bufferP, unsigned int lengthP)
            }
         else
            sequenceNumberM = seq;
-        // Header lenght
+        // Header length
         headerlen = (3 + cc) * (unsigned int)sizeof(uint32_t);
         // Check if extension
         if (x) {
@@ -130,7 +130,7 @@ void cSatipRtp::Process(void)
        count = ReadMulti(bufferM, lenMsg, eRtpPacketReadCount, eMaxUdpPacketSizeB);
        for (int i = 0; i < count; ++i) {
            unsigned char *p = &bufferM[i * eMaxUdpPacketSizeB];
-           int headerlen = GetHeaderLenght(p, lenMsg[i]);
+           int headerlen = GetHeaderLength(p, lenMsg[i]);
            if ((headerlen >= 0) && (headerlen < (int)lenMsg[i]))
               tunerM.ProcessVideoData(p + headerlen, lenMsg[i] - headerlen);
            }
diff --git a/rtp.h b/rtp.h
index 1bd140a..5080e37 100644
--- a/rtp.h
+++ b/rtp.h
@@ -25,7 +25,7 @@ private:
   time_t lastErrorReportM;
   int packetErrorsM;
   int sequenceNumberM;
-  int GetHeaderLenght(unsigned char *bufferP, unsigned int lengthP);
+  int GetHeaderLength(unsigned char *bufferP, unsigned int lengthP);
 
 public:
   cSatipRtp(cSatipTunerIf &tunerP);
diff --git a/tunerif.h b/tunerif.h
index c6f05e1..3790bcd 100644
--- a/tunerif.h
+++ b/tunerif.h
@@ -12,8 +12,8 @@ class cSatipTunerIf {
 public:
   cSatipTunerIf() {}
   virtual ~cSatipTunerIf() {}
-  virtual void ProcessVideoData(u_char *bufferP, int lenghtP) = 0;
-  virtual void ProcessApplicationData(u_char *bufferP, int lenghtP) = 0;
+  virtual void ProcessVideoData(u_char *bufferP, int lengthP) = 0;
+  virtual void ProcessApplicationData(u_char *bufferP, int lengthP) = 0;
   virtual void SetStreamId(int streamIdP) = 0;
   virtual void SetSessionTimeout(const char *sessionP, int timeoutP) = 0;
   virtual int GetId(void) = 0;