diff --git a/include/uapi/linux/coda.h b/include/uapi/linux/coda.h
index 695fade..ed8cb26 100644
--- a/include/uapi/linux/coda.h
+++ b/include/uapi/linux/coda.h
@@ -295,8 +295,8 @@
 struct coda_in_hdr {
     u_int32_t opcode;
     u_int32_t unique;	    /* Keep multiple outstanding msgs distinct */
-    pid_t pid;
-    pid_t pgid;
+    __kernel_pid_t pid;
+    __kernel_pid_t pgid;
     vuid_t uid;
 };