diff --git a/operame.ino b/operame.ino
index 2477e33..7b94488 100644
--- a/operame.ino
+++ b/operame.ino
@@ -56,7 +56,15 @@ void retain(String topic, String message) {
     mqtt.publish(topic, message, true, 0);
 }
 
+void clear_sprite(int bg = TFT_BLACK) {
+    sprite.fillSprite(bg);
+    if (WiFi.status() == WL_CONNECTED) {
+        sprite.drawRect(0, 0, display.width(), display.height(), TFT_BLUE);
+    }
+}
+
 void display_big(const String& text, int fg = TFT_WHITE, int bg = TFT_BLACK) {
+    clear_sprite(bg);
     sprite.setTextSize(1);
     bool nondigits = false;
     for (int i = 0; i < text.length(); i++) {
@@ -67,22 +75,18 @@ void display_big(const String& text, int fg = TFT_WHITE, int bg = TFT_BLACK) {
     sprite.setTextSize(nondigits && text.length() < 10 ? 2 : 1);
     sprite.setTextDatum(MC_DATUM);
     sprite.setTextColor(fg, bg);
-    sprite.fillSprite(bg);
-    if (WiFi.status() == WL_CONNECTED)
-        sprite.drawRect(0, 0, display.width(), display.height(), TFT_BLUE);
     sprite.drawString(text, display.width()/2, display.height()/2);
 
     sprite.pushSprite(0, 0);
 }
 
 void display_lines(const std::list<String>& lines, int fg = TFT_WHITE, int bg = TFT_BLACK) {
+    clear_sprite(bg);
     sprite.setTextSize(1);
     sprite.setTextFont(4);
     sprite.setTextDatum(MC_DATUM);
     sprite.setTextColor(fg, bg);
-    sprite.fillSprite(bg);
-    if (WiFi.status() == WL_CONNECTED)
-        sprite.drawRect(0, 0, display.width(), display.height(), TFT_BLUE);
+
     const int line_height = 32;
     int y = display.height()/2 - (lines.size()-1) * line_height/2;
     for (auto line : lines) {
@@ -93,12 +97,9 @@ void display_lines(const std::list<String>& lines, int fg = TFT_WHITE, int bg =
 }
 
 void display_logo() {
+    clear_sprite();
     sprite.setSwapBytes(true);
-    sprite.fillSprite(TFT_BLACK);
     sprite.pushImage(12, 30, 215, 76, OPERAME_LOGO);
-    if (WiFi.status() == WL_CONNECTED)
-        sprite.drawRect(0, 0, display.width(), display.height(), TFT_BLUE);
-
     sprite.pushSprite(0, 0);
 }