diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 5b9b1705912..0be303076ef 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,7 @@
+2015-08-27  Pedro Alves  <palves@redhat.com>
+
+	* proc-service.c (ps_pdwrite): Return PS_ERR/PS_OK explicily.
+
 2015-08-26  Simon Marchi  <simon.marchi@ericsson.com>
 
 	* ax.c (gdb_parse_agent_expr): Likewise.
diff --git a/gdb/gdbserver/proc-service.c b/gdb/gdbserver/proc-service.c
index f36e3fb600d..128939dc2f4 100644
--- a/gdb/gdbserver/proc-service.c
+++ b/gdb/gdbserver/proc-service.c
@@ -90,7 +90,9 @@ ps_err_e
 ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr,
 	    gdb_ps_write_buf_t buf, gdb_ps_size_t size)
 {
-  return write_inferior_memory ((unsigned long) addr, buf, size);
+  if (write_inferior_memory ((unsigned long) addr, buf, size) != 0)
+    return PS_ERR;
+  return PS_OK;
 }
 
 /* Get the general registers of LWP LWPID within the target process PH