diff --git a/cmd/mount/dir.go b/cmd/mount/dir.go
index 38c7eb7a7..a178c0f23 100644
--- a/cmd/mount/dir.go
+++ b/cmd/mount/dir.go
@@ -1,4 +1,4 @@
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/file.go b/cmd/mount/file.go
index fbefca457..b182838a7 100644
--- a/cmd/mount/file.go
+++ b/cmd/mount/file.go
@@ -1,4 +1,4 @@
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/fs.go b/cmd/mount/fs.go
index 7a7aa667e..7f72634f7 100644
--- a/cmd/mount/fs.go
+++ b/cmd/mount/fs.go
@@ -1,6 +1,6 @@
 // FUSE main Fs
 
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/handle.go b/cmd/mount/handle.go
index 86105fe9f..7e35102c7 100644
--- a/cmd/mount/handle.go
+++ b/cmd/mount/handle.go
@@ -1,4 +1,4 @@
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/mount.go b/cmd/mount/mount.go
index a9821ecae..d510072cc 100644
--- a/cmd/mount/mount.go
+++ b/cmd/mount/mount.go
@@ -1,6 +1,6 @@
 // Package mount implements a FUSE mounting system for rclone remotes.
 
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/mount_test.go b/cmd/mount/mount_test.go
index 14a56e5f1..ffc36212a 100644
--- a/cmd/mount/mount_test.go
+++ b/cmd/mount/mount_test.go
@@ -1,4 +1,4 @@
-// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
+// +build linux,go1.13 freebsd,go1.13
 
 package mount
 
diff --git a/cmd/mount/mount_unsupported.go b/cmd/mount/mount_unsupported.go
index 7b40e0f2c..bff6cd670 100644
--- a/cmd/mount/mount_unsupported.go
+++ b/cmd/mount/mount_unsupported.go
@@ -3,12 +3,11 @@
 
 // Invert the build constraint: linux,go1.13 darwin,go1.13 freebsd,go1.13
 //
-// !((linux&&go1.13) || (darwin&&go1.13) || (freebsd&&go1.13))
-// == !(linux&&go1.13) && !(darwin&&go1.13) && !(freebsd&&go1.13))
-// == (!linux || !go1.13) && (!darwin || go1.13) && (!freebsd || !go1.13))
+// !((linux&&go1.13) || (freebsd&&go1.13))
+// == !(linux&&go1.13) && !(freebsd&&go1.13))
+// == (!linux || !go1.13) && (!freebsd || !go1.13))
 
 // +build !linux !go1.13
-// +build !darwin !go1.13
 // +build !freebsd !go1.13
 
 package mount