diff --git a/src/api/wayland/mod.rs b/src/api/wayland/mod.rs
index 8084516b..ab71ffae 100644
--- a/src/api/wayland/mod.rs
+++ b/src/api/wayland/mod.rs
@@ -258,8 +258,8 @@ impl Window {
         use self::wayland::internals::FFI;
 
         // not implemented
-        assert!(win_attribs.min_dimensions.is_none());
-        assert!(win_attribs.max_dimensions.is_none());
+        assert!(window.min_dimensions.is_none());
+        assert!(window.max_dimensions.is_none());
 
         let wayland_context = match *WAYLAND_CONTEXT {
             Some(ref c) => c,
diff --git a/src/api/x11/window.rs b/src/api/x11/window.rs
index 4d2dfb24..09470ff2 100644
--- a/src/api/x11/window.rs
+++ b/src/api/x11/window.rs
@@ -305,8 +305,8 @@ impl Window {
         let dimensions = window_attrs.dimensions.unwrap_or((800, 600));
 
         // not implemented
-        assert!(win_attribs.min_dimensions.is_none());
-        assert!(win_attribs.max_dimensions.is_none());
+        assert!(window_attrs.min_dimensions.is_none());
+        assert!(window_attrs.max_dimensions.is_none());
 
         let screen_id = match window_attrs.monitor {
             Some(PlatformMonitorId::X(MonitorId(_, monitor))) => monitor as i32,