diff --git a/src/main/java/codes/ztereohype/nicerskies/gui/ConfigScreen.java b/src/main/java/codes/ztereohype/nicerskies/gui/ConfigScreen.java
index f9f967c..5e145f2 100644
--- a/src/main/java/codes/ztereohype/nicerskies/gui/ConfigScreen.java
+++ b/src/main/java/codes/ztereohype/nicerskies/gui/ConfigScreen.java
@@ -178,7 +178,7 @@ public class ConfigScreen extends Screen {
 
     @Override
     public void onClose() {
-        if (invalidated) {
+        if (invalidated && NebulaSeedManager.canGetSeed()) {
             NicerSkies.skyManager.generateSky(NebulaSeedManager.getSeed());
         }
         minecraft.setScreen(lastScreen);