diff --git a/src/data/defs.txt b/src/data/defs.txt
index 7ad931d..71ac1ed 100644
--- a/src/data/defs.txt
+++ b/src/data/defs.txt
@@ -80,7 +80,7 @@ actor 0 0 0
             only_in_map_at_dist 1e10 jupiter
             clickable no
             physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 thebe
             name Metis
             relativeto jupiter
             id metis
@@ -95,7 +95,7 @@ actor 0 0 0
                 only_in_map_at_dist 1e7 metis
                 clickable no
                 physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 thebe
             name Adrastea
             relativeto jupiter
             id adrastea
@@ -110,7 +110,7 @@ actor 0 0 0
                 only_in_map_at_dist 1e7 adrastea
                 clickable no
                 physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 thebe
             name Amalthea
             relativeto jupiter
             id amalthea