diff --git a/Utilities/cmlibarchive/libarchive/archive_endian.h b/Utilities/cmlibarchive/libarchive/archive_endian.h
index 067312d388..58abee6df6 100644
--- a/Utilities/cmlibarchive/libarchive/archive_endian.h
+++ b/Utilities/cmlibarchive/libarchive/archive_endian.h
@@ -48,7 +48,7 @@
  */
 #if defined(__WATCOMC__) || defined(__sgi) || defined(__hpux) || defined(__BORLANDC__) || defined(__SUNPRO_C)
 #define inline
-#elif defined(_MSC_VER)
+#elif defined(_MSC_VER) || defined(__osf__)
 #define inline __inline
 #endif