--- lcms-1.15/include/lcms.h
+++ lcms-1.15/include/lcms.h
@@ -134,7 +134,7 @@
 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
 #  include <sys/types.h>
 #  define USE_INT64           1
-#  define LCMSSLONGLONG       int_64_t
+#  define LCMSSLONGLONG       int64_t
 #  define LCMSULONGLONG       u_int64_t
 #endif