diff --git a/src/dd.c b/src/dd.c
index 3f54cc7b5..1d8cfe07f 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -57,12 +57,6 @@ static void process_signals (void);
 #  define siginterrupt(sig, flag) /* empty */
 # endif
 #endif
-#ifndef SA_NODEFER
-# define SA_NODEFER 0
-#endif
-#ifndef SA_RESETHAND
-# define SA_RESETHAND 0
-#endif
 
 #ifndef SIGINFO
 # define SIGINFO SIGUSR1
diff --git a/src/ls.c b/src/ls.c
index ca09ead8d..aa9fb6c1a 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -76,9 +76,6 @@
 #  define siginterrupt(sig, flag) /* empty */
 # endif
 #endif
-#ifndef SA_RESTART
-# define SA_RESTART 0
-#endif
 
 #include "system.h"
 #include <fnmatch.h>