diff --git a/routes.go b/routes.go
index 5eb9c94..d72d653 100644
--- a/routes.go
+++ b/routes.go
@@ -263,14 +263,14 @@ func Initialize(Host string, r *http.Request) (State, error) {
 	if dark := getCookie(r, "Dark"); dark != "" {
 		state.Dark = dark != "0"
 	} else {
-		state.Dark = os.Getenv("DARK") != "0"
+		state.Dark = os.Getenv("DARK") != ""
 	}
 	state.ShowNSFW = getCookie(r, "ShowNSFW") != ""
 	state.HideInstanceNames = getCookie(r, "HideInstanceNames") != ""
 	if hide := getCookie(r, "HideThumbnails"); hide != "" {
 		state.HideThumbnails = hide != "0"
 	} else {
-		state.HideThumbnails = os.Getenv("HIDE_THUMBNAILS") != "0"
+		state.HideThumbnails = os.Getenv("HIDE_THUMBNAILS") != ""
 	}
 	state.ParseQuery(r.URL.RawQuery)
 	if state.Sort == "" {