diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp
index 2447a559fd..ab90839e68 100644
--- a/src/unix/utilsunx.cpp
+++ b/src/unix/utilsunx.cpp
@@ -47,6 +47,7 @@
 #if defined( __MWERKS__ ) && defined(__MACH__)
 #define WXWIN_OS_DESCRIPTION "MacOS X"
 #define HAVE_NANOSLEEP
+#define HAVE_UNAME
 #endif
 
 // not only the statfs syscall is called differently depending on platform, but