--- a/pce.c	Wed Dec 21 23:27:15 2011 +0100
+++ b/pce.c	Sun Jan 01 21:43:00 2012 +0100
@@ -218,7 +218,7 @@
     fprintf(stderr, "Debug: %02hhx%02hhx%02hhx\n", data[0], data[1], data[2]);
     assert(data[0] == 2);
 
-    int num = *((short int*) &data[1]);
+    int num = *((unsigned short int*) &data[1]);
     fprintf(stderr, "Found %i bytes = %i samples\n", num, num/4);
 
     if (num > 0)