--- a/wavsplit.c	2006-11-24 17:53:36.056883000 +0100
+++ b/wavsplit.c	2006-11-24 17:52:38.345276250 +0100
@@ -403,7 +403,7 @@
   ptr += 4;                     /* we move past fmt_ */
   memcpy (&waveformat, ptr, sizeof (WAVEFORMAT));
 
-  if (waveformat.dwSize < (sizeof (WAVEFORMAT) - sizeof (u_long))) {
+  if (waveformat.dwSize < (sizeof (WAVEFORMAT) - sizeof (u_int))) {
     fprintf (stderr, "Bad format: Bad fmt size\n");
     return 1;
   }
@@ -423,7 +423,7 @@
   }
 
   ptr += 4;                     /* we move past data */
-  memcpy (&databytes, ptr, sizeof (u_long));
+  memcpy (&databytes, ptr, sizeof (u_int));
 
   struct stat stat_buf;
 
@@ -446,7 +446,7 @@
 
   if (verbose) {
     printf ("Channels: %d\n", waveformat.wChannels);
-    printf ("Samplerate: %ldHz\n", waveformat.dwSamplesPerSec);
+    printf ("Samplerate: %dHz\n", waveformat.dwSamplesPerSec);
     printf ("Samplebits: %d\n", waveformat.wBitsPerSample);
     printf ("Databytes: %llu\n\n", databytes);
     printf ("Split         Hours  Mins   Seconds         Bytes         %%\n");
--- a/wavsplit.h	2006-11-24 17:53:36.056883000 +0100
+++ b/wavsplit.h	2006-11-24 17:43:58.648797250 +0100
@@ -46,29 +46,29 @@
 } TIMEFORMAT;
 
 typedef struct {
-  u_long dwSize;
+  u_int dwSize;
   u_short wFormatTag;
   u_short wChannels;
-  u_long dwSamplesPerSec;
-  u_long dwAvgBytesPerSec;
+  u_int dwSamplesPerSec;
+  u_int dwAvgBytesPerSec;
   u_short wBlockAlign;
   u_short wBitsPerSample;
 } WAVEFORMAT;
 
 typedef struct {
   char RiffID[4];
-  u_long RiffSize;
+  u_int RiffSize;
   char WaveID[4];
   char FmtID[4];
-  u_long FmtSize;
+  u_int FmtSize;
   u_short wFormatTag;
   u_short nChannels;
-  u_long nSamplesPerSec;
-  u_long nAvgBytesPerSec;
+  u_int nSamplesPerSec;
+  u_int nAvgBytesPerSec;
   u_short nBlockAlign;
   u_short wBitsPerSample;
   char DataID[4];
-  u_long nDataBytes;
+  u_int nDataBytes;
 } WAVE_HEADER;
 
 typedef struct {