diff --git a/app.go b/app.go
index 1240b0e..8ff6f12 100644
--- a/app.go
+++ b/app.go
@@ -110,7 +110,7 @@ func (app *app) exportVars() {
 
 	marks := app.nav.currMarks()
 
-	envFiles := strings.Join(marks, ":")
+	envFiles := strings.Join(marks, gOpts.filesep)
 
 	os.Setenv("f", envFile)
 	os.Setenv("fs", envFiles)
diff --git a/comp.go b/comp.go
index a96ff06..f2b1400 100644
--- a/comp.go
+++ b/comp.go
@@ -58,6 +58,7 @@ var (
 		"preview!",
 		"scrolloff",
 		"tabstop",
+		"filesep",
 		"ifs",
 		"previewer",
 		"shell",
diff --git a/doc.go b/doc.go
index dc6c9d8..812d1de 100644
--- a/doc.go
+++ b/doc.go
@@ -53,6 +53,7 @@ The following options can be used to customize the behavior of lf:
 	preview    bool    (default on)
 	scrolloff  int     (default 0)
 	tabstop    int     (default 8)
+	filesep    string  (default ":")
 	ifs        string  (default "") (not exported if empty)
 	previewer  string  (default "") (not filtered if empty)
 	shell      string  (default "$SHELL")
diff --git a/docstring.go b/docstring.go
index 977a02f..833f7bd 100644
--- a/docstring.go
+++ b/docstring.go
@@ -57,6 +57,7 @@ The following options can be used to customize the behavior of lf:
     preview    bool    (default on)
     scrolloff  int     (default 0)
     tabstop    int     (default 8)
+    filesep    string  (default ":")
     ifs        string  (default "") (not exported if empty)
     previewer  string  (default "") (not filtered if empty)
     shell      string  (default "$SHELL")
diff --git a/eval.go b/eval.go
index 709d2e1..355a710 100644
--- a/eval.go
+++ b/eval.go
@@ -69,6 +69,8 @@ func (e *setExpr) eval(app *app, args []string) {
 			return
 		}
 		gOpts.tabstop = n
+	case "filesep":
+		gOpts.filesep = e.val
 	case "ifs":
 		gOpts.ifs = e.val
 	case "previewer":
diff --git a/opts.go b/opts.go
index 0ef5840..ccd7e85 100644
--- a/opts.go
+++ b/opts.go
@@ -8,6 +8,7 @@ var gOpts struct {
 	preview   bool
 	scrolloff int
 	tabstop   int
+	filesep   string
 	ifs       string
 	previewer string
 	shell     string
@@ -25,6 +26,7 @@ func init() {
 	gOpts.preview = true
 	gOpts.scrolloff = 0
 	gOpts.tabstop = 8
+	gOpts.filesep = ":"
 	gOpts.shell = envShell
 	gOpts.showinfo = "none"
 	gOpts.sortby = "natural"