diff --git a/src/Config.zig b/src/Config.zig
index 2b6a2b1..8ac3d59 100644
--- a/src/Config.zig
+++ b/src/Config.zig
@@ -143,8 +143,8 @@ pub fn create() !*Config {
     if (try known_folders.getPath(utils.gpa, .local_configuration)) |config_dir| blk: {
         defer utils.gpa.free(config_dir);
 
-        const config_path = try std.fmt.allocPrint(utils.gpa, "{s}/{s}", .{ config_dir, CONFIG_FILE });
-        defer utils.gpa.free(config_path);
+        var path_buf: [std.fs.max_path_bytes]u8 = undefined;
+        const config_path = std.fmt.bufPrint(&path_buf, "{s}/{s}", .{ config_dir, CONFIG_FILE }) catch return config;
 
         const file = fs.openFileAbsolute(config_path, .{}) catch break :blk;
 
diff --git a/src/utils.zig b/src/utils.zig
index d53a126..7691461 100644
--- a/src/utils.zig
+++ b/src/utils.zig
@@ -78,8 +78,8 @@ pub fn parseModifiers(s: []const u8) !?river.SeatV1.Modifiers {
         if (part.len < 3 or part.len > 5) return null;
 
         // Case-insensitive comparison by lowercasing
-        const lower = try std.ascii.allocLowerString(utils.gpa, part);
-        defer utils.gpa.free(lower);
+        var lower_buf: [5]u8 = undefined;
+        const lower = std.ascii.lowerString(lower_buf[0..part.len], part);
 
         if (mem.eql(u8, lower, "none")) {
             // No modifier bits to set