diff --git a/build.zig b/build.zig
index fe73229..12ababb 100644
--- a/build.zig
+++ b/build.zig
@@ -44,8 +44,8 @@ pub fn build(b: *std.Build) !void {
     const enable_x11_support = b.option(bool, "enable_x11_support", "Enable X11 support (default is on)") orelse true;
     const default_tty = b.option(u8, "default_tty", "Set the TTY (default is 2)") orelse 2;
     const fallback_tty = b.option(u8, "fallback_tty", "Set the fallback TTY (default is 2). This value gets embedded into the binary") orelse 2;
-    const fallback_uid_min = b.option(std.posix.uid_t, "fallback_uid_min", "Set the fallback minimum UID (default is 1000). This value gets embedded into the binary") orelse 2;
-    const fallback_uid_max = b.option(std.posix.uid_t, "fallback_uid_max", "Set the fallback maximum UID (default is 60000). This value gets embedded into the binary") orelse 2;
+    const fallback_uid_min = b.option(std.posix.uid_t, "fallback_uid_min", "Set the fallback minimum UID (default is 1000). This value gets embedded into the binary") orelse 1000;
+    const fallback_uid_max = b.option(std.posix.uid_t, "fallback_uid_max", "Set the fallback maximum UID (default is 60000). This value gets embedded into the binary") orelse 60000;
 
     default_tty_str = try std.fmt.allocPrint(b.allocator, "{d}", .{default_tty});
 
diff --git a/src/interop.zig b/src/interop.zig
index 2f8483a..4d52f49 100644
--- a/src/interop.zig
+++ b/src/interop.zig
@@ -171,17 +171,22 @@ fn PlatformStruct() type {
 
                 var iterator = std.mem.splitScalar(u8, login_defs_buffer, '\n');
                 var uid_range = UidRange{};
+                var nameFound = false;
 
                 while (iterator.next()) |line| {
                     const trimmed_line = std.mem.trim(u8, line, " \n\r\t");
 
                     if (std.mem.startsWith(u8, trimmed_line, "UID_MIN")) {
                         uid_range.uid_min = try parseValue(std.posix.uid_t, "UID_MIN", trimmed_line);
+                        nameFound = true;
                     } else if (std.mem.startsWith(u8, trimmed_line, "UID_MAX")) {
                         uid_range.uid_max = try parseValue(std.posix.uid_t, "UID_MAX", trimmed_line);
+                        nameFound = true;
                     }
                 }
 
+                if (!nameFound) return error.UidNameNotFound;
+
                 // This code assumes the OS has a login.defs file with UID_MIN
                 // and UID_MAX values defined in it, which should be the case
                 // for most systemd-based Linux distributions out there.