diff --git a/sys/powerpc/include/sigframe.h b/sys/powerpc/include/sigframe.h
index 4ed62f4d75cb..d0e886e9bc90 100644
--- a/sys/powerpc/include/sigframe.h
+++ b/sys/powerpc/include/sigframe.h
@@ -31,13 +31,7 @@
 #ifndef _MACHINE_SIGFRAME_H_
 #define _MACHINE_SIGFRAME_H_ 1
 
-struct osigframe {
-	struct osigcontext	sf_sc;
-	osiginfo_t		sf_si;
-};
-
 struct sigframe {
-	unsigned long	__spare__;
 	ucontext_t	sf_uc;
 	siginfo_t	sf_si;
 };