diff --git a/src/delete.zig b/src/delete.zig
index ecc490e..f76e4c3 100644
--- a/src/delete.zig
+++ b/src/delete.zig
@@ -74,8 +74,7 @@ fn deleteItem(dir: std.Io.Dir, path: [:0]const u8, ptr: *align(1) ?*model.Entry)
 // Returns true if the item has been deleted successfully.
 fn deleteCmd(path: [:0]const u8, ptr: *align(1) ?*model.Entry) bool {
     {
-        var env = std.process.getEnvMap(main.allocator) catch unreachable;
-        defer env.deinit();
+        var env = main.environ_map.clone(main.allocator) catch unreachable;
         env.put("NCDU_DELETE_PATH", path) catch unreachable;
 
         // Since we're passing the path as an environment variable and go through
@@ -83,7 +82,7 @@ fn deleteCmd(path: [:0]const u8, ptr: *align(1) ?*model.Entry) bool {
         // shell escaping.
         const cmd = std.fmt.allocPrint(main.allocator, "{s} \"$NCDU_DELETE_PATH\"", .{main.config.delete_command}) catch unreachable;
         defer main.allocator.free(cmd);
-        ui.runCmd(&.{"/bin/sh", "-c", cmd}, null, &env, true);
+        ui.runCmd(&.{"/bin/sh", "-c", cmd}, null, env, true);
     }
 
     const stat = scan.statAt(std.fs.cwd(), path, false, null) catch {
diff --git a/src/main.zig b/src/main.zig
index 980b9ba..f943447 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -609,7 +609,7 @@ pub fn main(init: std.process.Init) void {
             },
             .shell => {
                 const shell = environ_map.get("NCDU_SHELL") orelse environ_map.get("SHELL") orelse "/bin/sh";
-                ui.runCmd(&.{shell}, browser.dir_path, false);
+                ui.runCmd(&.{shell}, browser.dir_path, environ_map.clone(allocator) catch unreachable, false);
                 state = .browse;
             },
             .delete => {
diff --git a/src/ui.zig b/src/ui.zig
index aa0a340..5e6cd1e 100644
--- a/src/ui.zig
+++ b/src/ui.zig
@@ -645,10 +645,10 @@ fn waitInput() void {
     _ = rd.interface.discardDelimiterExclusive('\n') catch unreachable;
 }
 
-pub fn runCmd(cmd: []const []const u8, cwd: ?[]const u8, reporterr: bool) void {
+pub fn runCmd(cmd: []const []const u8, cwd: ?[]const u8, environ: std.process.Environ.Map, reporterr: bool) void {
     deinit();
     defer init();
-    var env = main.environ_map.clone(main.allocator) catch unreachable;
+    var env = @constCast(&environ);
     defer env.deinit();
 
     // NCDU_LEVEL can only count to 9, keeps the implementation simple.
@@ -664,7 +664,7 @@ pub fn runCmd(cmd: []const []const u8, cwd: ?[]const u8, reporterr: bool) void {
     var child = std.process.spawn(main.io, .{
         .argv = cmd,
         .cwd = if (cwd) |p| .{ .path = p } else .inherit,
-        .environ_map = &env,
+        .environ_map = env,
     }) catch |e| die("Failed to spawn process: {s}", .{errorString(e)});
 
     const term = child.wait(main.io) catch |e| blk: {