diff --git a/sys/powerpc/aim/vm_machdep.c b/sys/powerpc/aim/vm_machdep.c
index 36345ece176a..966afdc22283 100644
--- a/sys/powerpc/aim/vm_machdep.c
+++ b/sys/powerpc/aim/vm_machdep.c
@@ -125,7 +125,6 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags)
 	struct	proc *p1;
 	struct	trapframe *tf;
 	struct	callframe *cf;
-	struct	switchframe *sf;
 	struct	pcb *pcb;
 
 	KASSERT(td1 == curthread || td1 == &thread0,
diff --git a/sys/powerpc/powerpc/vm_machdep.c b/sys/powerpc/powerpc/vm_machdep.c
index 36345ece176a..966afdc22283 100644
--- a/sys/powerpc/powerpc/vm_machdep.c
+++ b/sys/powerpc/powerpc/vm_machdep.c
@@ -125,7 +125,6 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags)
 	struct	proc *p1;
 	struct	trapframe *tf;
 	struct	callframe *cf;
-	struct	switchframe *sf;
 	struct	pcb *pcb;
 
 	KASSERT(td1 == curthread || td1 == &thread0,