diff --git a/src/main/java/featurecat/lizzie/gui/BoardRenderer.java b/src/main/java/featurecat/lizzie/gui/BoardRenderer.java
index 76351c04d..959617aa8 100644
--- a/src/main/java/featurecat/lizzie/gui/BoardRenderer.java
+++ b/src/main/java/featurecat/lizzie/gui/BoardRenderer.java
@@ -872,7 +872,7 @@ private void drawLeelazSuggestionsBackgroundShadow(Graphics2D g, List<TextData>
         float brightness = 0.85f;
         float alpha =
             minAlpha
-                + (maxAlpha - minAlpha)
+                + max(0, maxAlpha - minAlpha)
                     * max(
                         0,
                         (float)
@@ -1776,7 +1776,7 @@ private boolean showCoordinates() {
   }
 
   public void increaseMaxAlpha(int k) {
-    maxAlpha = min(maxAlpha + k, 255);
+    maxAlpha = max(0, min(maxAlpha + k, 255));
     uiPersist.put("max-alpha", maxAlpha);
   }