diff --git a/mods/troll.js b/mods/troll.js
index 9c8f1d82..30caf023 100644
--- a/mods/troll.js
+++ b/mods/troll.js
@@ -15,6 +15,7 @@ elements.troll1 = {
 	category: "machines",
 	insulate: true,
 	state: "solid",
+	excludeRandom: true,
 },
 
 elements.troll2 = {
@@ -34,6 +35,7 @@ elements.troll2 = {
 	category: "machines",
 	insulate: true,
 	state: "solid",
+	excludeRandom: true,
 },
 
 elements.troll3 = {
@@ -53,4 +55,5 @@ elements.troll3 = {
 	category: "machines",
 	insulate: true,
 	state: "solid",
+	excludeRandom: true,
 }