diff --git a/sys/fs/nfsclient/nfs_clbio.c b/sys/fs/nfsclient/nfs_clbio.c
index 37f824cb3752..7b58297ad87b 100644
--- a/sys/fs/nfsclient/nfs_clbio.c
+++ b/sys/fs/nfsclient/nfs_clbio.c
@@ -311,7 +311,7 @@ ncl_getpages(struct vop_getpages_args *ap)
 			 */
 			m->valid = 0;
 			vm_page_set_valid(m, 0, size - toff);
-			KASSERT((m->dirty & vm_page_bits(0, size - toff)) == 0,
+			KASSERT(m->dirty == 0,
 			    ("nfs_getpages: page %p is dirty", m));
 		} else {
 			/*
diff --git a/sys/fs/smbfs/smbfs_io.c b/sys/fs/smbfs/smbfs_io.c
index 4ea192b14f60..8ff8266f6853 100644
--- a/sys/fs/smbfs/smbfs_io.c
+++ b/sys/fs/smbfs/smbfs_io.c
@@ -525,7 +525,7 @@ smbfs_getpages(ap)
 			 */
 			m->valid = 0;
 			vm_page_set_valid(m, 0, size - toff);
-			KASSERT((m->dirty & vm_page_bits(0, size - toff)) == 0,
+			KASSERT(m->dirty == 0,
 			    ("smbfs_getpages: page %p is dirty", m));
 		} else {
 			/*
diff --git a/sys/nfsclient/nfs_bio.c b/sys/nfsclient/nfs_bio.c
index 92be17c0238f..3c12ea057ef1 100644
--- a/sys/nfsclient/nfs_bio.c
+++ b/sys/nfsclient/nfs_bio.c
@@ -214,7 +214,7 @@ nfs_getpages(struct vop_getpages_args *ap)
 			 */
 			m->valid = 0;
 			vm_page_set_valid(m, 0, size - toff);
-			KASSERT((m->dirty & vm_page_bits(0, size - toff)) == 0,
+			KASSERT(m->dirty == 0,
 			    ("nfs_getpages: page %p is dirty", m));
 		} else {
 			/*