diff --git a/man2/mount.2 b/man2/mount.2
index 682d8953c..143a45e7f 100644
--- a/man2/mount.2
+++ b/man2/mount.2
@@ -633,7 +633,7 @@ Mounting a read-only filesystem was attempted without giving the
 .B MS_RDONLY
 flag.
 .IP
-The file system may be read-only for various reasons, including:
+The filesystem may be read-only for various reasons, including:
 it resides on a read-only optical disk;
 it is resides on a device with a physical switch that has been set to
 mark the device read-only;
diff --git a/man2/pidfd_open.2 b/man2/pidfd_open.2
index f77eed372..8f9c5179b 100644
--- a/man2/pidfd_open.2
+++ b/man2/pidfd_open.2
@@ -183,7 +183,7 @@ The alternative is to obtain a file descriptor by opening a
 directory.
 However, the latter technique is possible only if the
 .BR proc (5)
-file system is mounted;
+filesystem is mounted;
 furthermore, the file descriptor obtained in this way is
 .I not
 pollable and can't be waited on with
diff --git a/man4/fuse.4 b/man4/fuse.4
index ffe5a012d..87da00849 100644
--- a/man4/fuse.4
+++ b/man4/fuse.4
@@ -192,7 +192,7 @@ struct fuse_getattr_in {
 The requested operation is to compute the attributes to be returned
 by
 .BR stat (2)
-and similar operations for the given file system object.
+and similar operations for the given filesystem object.
 The object for which the attributes should be computed is indicated
 either by
 .IR header\->nodeid