diff --git a/headers/os/BeBuild.h b/headers/os/BeBuild.h
index cbb49f34b1..77f577e670 100644
--- a/headers/os/BeBuild.h
+++ b/headers/os/BeBuild.h
@@ -82,6 +82,7 @@
 	__attribute__((format(__printf__, _format_, _args_)))
 #if __GNUC__ >= 4
 # define _EXPORT __attribute__((visibility("default")))
+# define B_ALWAYS_INLINE __attribute__((always_inline)) inline
 #else
 # define _EXPORT
 #endif