diff --git a/core/src/mindustry/content/ErekirTechTree.java b/core/src/mindustry/content/ErekirTechTree.java
index 0c17870425..4ce688152d 100644
--- a/core/src/mindustry/content/ErekirTechTree.java
+++ b/core/src/mindustry/content/ErekirTechTree.java
@@ -198,8 +198,8 @@ public class ErekirTechTree{
 
                                 });
                                 node(heatRedirector, Seq.with(new OnSector(ravine)), () -> {
-                                    node(electricHeater, Seq.with(tmpNever), () -> {
-                                        node(slagHeater, () -> {
+                                    node(electricHeater, Seq.with(new OnSector(ravine), new Research(afflict)), () -> {
+                                        node(slagHeater, Seq.with(tmpNever), () -> {
 
                                         });