diff --git a/defs.h b/defs.h
index 62b37191..a7e87933 100644
--- a/defs.h
+++ b/defs.h
@@ -490,6 +490,7 @@ extern int get_scno(struct tcb *);
 extern long known_scno(struct tcb *);
 extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
 extern int ptrace_restart(int request, struct tcb *tcp, int sig);
+extern int force_result(struct tcb *, int, long);
 extern int trace_syscall(struct tcb *);
 extern int count_syscall(struct tcb *, struct timeval *);
 extern void printxval(const struct xlat *, int, const char *);
diff --git a/process.c b/process.c
index c69e45e6..dadf8306 100644
--- a/process.c
+++ b/process.c
@@ -1981,7 +1981,6 @@ int flagarg;
 		if (tcp->u_arg[flagarg] & WNOHANG) {
 			/* We must force a fake result of 0 instead of
 			   the ECHILD error.  */
-			extern int force_result();
 			return force_result(tcp, 0, 0);
 		}
 	}