diff --git a/arch/um/include/ptrace_user.h b/arch/um/include/ptrace_user.h
index cdde959df40e56bcd6529206294ef48752e2beab..92c2bd79ce940582ec2004ef4b720c3607275c3d 100644
--- a/arch/um/include/ptrace_user.h
+++ b/arch/um/include/ptrace_user.h
@@ -11,6 +11,7 @@
 extern int ptrace_getregs(long pid, unsigned long *regs_out);
 extern int ptrace_setregs(long pid, unsigned long *regs_in);
 extern int ptrace_getfpregs(long pid, unsigned long *regs_out);
+extern int ptrace_setfpregs(long pid, unsigned long *regs);
 extern void arch_enter_kernel(void *task, int pid);
 extern void arch_leave_kernel(void *task, int pid);
 extern void ptrace_pokeuser(unsigned long addr, unsigned long data);