diff --git a/src/constants.rs b/src/constants.rs
index e6233d0..f108f93 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -12,6 +12,12 @@ pub const ROOM_WIDTH: usize = 9;
 /// the height of a room in the grid of rooms (number of characters)
 pub const ROOM_HEIGHT: usize = 6;
 
+// the minmal width of a room
+pub const ROOM_MIN_WIDTH: usize = 4;
+
+// the minmal height of a room
+pub const ROOM_MIN_HEIGHT: usize = 4;
+
 /// How many levels does the dungeon have?
 pub const LEVELS: usize = 2;
 
diff --git a/src/room.rs b/src/room.rs
index ed10a6c..9c2afb7 100644
--- a/src/room.rs
+++ b/src/room.rs
@@ -4,7 +4,7 @@ use std::{
 };
 
 use crate::{
-    constants::{LEVEL_HEIGHT, LEVEL_WIDTH, ROOM_HEIGHT, ROOM_WIDTH},
+    constants::{LEVEL_HEIGHT, LEVEL_WIDTH, ROOM_HEIGHT, ROOM_MIN_HEIGHT, ROOM_MIN_WIDTH, ROOM_WIDTH},
     level::StructureElement,
 };
 use rand::rngs::ThreadRng;
@@ -119,8 +119,8 @@ pub struct Room {
 
 impl Room {
     pub fn new(rng: &mut ThreadRng) -> Self {
-        let width = rng.gen_range(3..ROOM_WIDTH);
-        let height = rng.gen_range(3..ROOM_HEIGHT);
+        let width = rng.gen_range(ROOM_MIN_WIDTH..ROOM_WIDTH);
+        let height = rng.gen_range(ROOM_MIN_HEIGHT..ROOM_HEIGHT);
         let offset_x = rng.gen_range(0..(ROOM_WIDTH - width));
         let offset_y = rng.gen_range(0..(ROOM_HEIGHT - height));
         let sx = offset_x + rng.gen_range(1..width - 1);