diff --git a/sys/coda/coda_vfsops.h b/sys/coda/coda_vfsops.h
index 13a006d1b1c..7fc9adf16c5 100644
--- a/sys/coda/coda_vfsops.h
+++ b/sys/coda/coda_vfsops.h
@@ -43,6 +43,7 @@ struct cfid {
     ViceFid	cfid_fid;
 };
 
+struct mbuf;
 struct mount;
 
 int coda_vfsopstats_init(void);
diff --git a/sys/fs/coda/coda_vfsops.h b/sys/fs/coda/coda_vfsops.h
index 13a006d1b1c..7fc9adf16c5 100644
--- a/sys/fs/coda/coda_vfsops.h
+++ b/sys/fs/coda/coda_vfsops.h
@@ -43,6 +43,7 @@ struct cfid {
     ViceFid	cfid_fid;
 };
 
+struct mbuf;
 struct mount;
 
 int coda_vfsopstats_init(void);