diff --git a/crc32.cc b/crc32.cc
index d253dd9..5eca100 100644
--- a/crc32.cc
+++ b/crc32.cc
@@ -31,7 +31,7 @@
  */
 uint32_t chksum_crc32 (unsigned char *block, unsigned int length)
 {
-   register unsigned long crc;
+   unsigned long crc;
    unsigned long i;
 
    crc = 0xFFFFFFFF;