diff --git a/core/assets-raw/sprites_replacement/items/item-thorium.png b/core/assets-raw/sprites_replacement/items/item-thorium.png
index ebb385b40d..709a4a1046 100644
Binary files a/core/assets-raw/sprites_replacement/items/item-thorium.png and b/core/assets-raw/sprites_replacement/items/item-thorium.png differ
diff --git a/core/src/io/anuke/mindustry/world/blocks/power/ImpactReactor.java b/core/src/io/anuke/mindustry/world/blocks/power/ImpactReactor.java
index 6a4823069a..8d6dc5e17e 100644
--- a/core/src/io/anuke/mindustry/world/blocks/power/ImpactReactor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/power/ImpactReactor.java
@@ -76,7 +76,7 @@ public class ImpactReactor extends PowerGenerator{
     public void update(Tile tile){
         FusionReactorEntity entity = tile.entity();
 
-        if(entity.cons.valid()){
+        if(entity.cons.valid() && entity.power.satisfaction >= 0.99f){
             entity.warmup = Mathf.lerpDelta(entity.warmup, 1f, warmupSpeed);
             if(Mathf.isEqual(entity.warmup, 1f, 0.001f)){
                 entity.warmup = 1f;