diff --git a/headers/os/BeBuild.h b/headers/os/BeBuild.h
index 2667b4986d..509ccf51e5 100644
--- a/headers/os/BeBuild.h
+++ b/headers/os/BeBuild.h
@@ -82,8 +82,14 @@
 #define B_DEFINE_SYMBOL_VERSION(function, versionedSymbol)	\
 	__asm__(".symver " function "," versionedSymbol)
 
-#define B_DEFINE_WEAK_ALIAS(name, alias_name)	\
-	__typeof(name) alias_name __attribute__((weak, alias(#name)))
+
+#ifdef __cplusplus
+#	define B_DEFINE_WEAK_ALIAS(name, alias_name)	\
+		extern "C" __typeof(name) alias_name __attribute__((weak, alias(#name)))
+#else
+#	define B_DEFINE_WEAK_ALIAS(name, alias_name)	\
+		__typeof(name) alias_name __attribute__((weak, alias(#name)))
+#endif
 
 
 #endif	/* _BE_BUILD_H */