diff --git a/ghc/runtime/main/Signals.lc b/ghc/runtime/main/Signals.lc
index db2da4eaa605776dd7d3af077172eeee962acf85..5bed26dbe4e87601a0c00c2e03d9d358c64e5e83 100644
--- a/ghc/runtime/main/Signals.lc
+++ b/ghc/runtime/main/Signals.lc
@@ -35,11 +35,6 @@ much pain.
 # define NON_POSIX_SOURCE
 #endif
 
-#if defined(linux_TARGET_OS) 
-# define NON_POSIX_SOURCE
-/* sigh, linux w/ glibc needs _BSD_SOURCE to get caddr_t... (ToDo) */
-#endif
-
 #if defined(osf3_TARGET_OS) || defined(osf1_TARGET_OS)
     /* The include files for OSF1 do not normally define SA_SIGINFO */
 # define _OSF_SOURCE 1