diff --git a/sc2/content/base/battle/asteroid.mid b/sc2/content/base/battle/asteroid.med
similarity index 100%
rename from sc2/content/base/battle/asteroid.mid
rename to sc2/content/base/battle/asteroid.med
diff --git a/sc2/content/uqm.rmp b/sc2/content/uqm.rmp
index a38a4fe6b..f3c7a8608 100644
--- a/sc2/content/uqm.rmp
+++ b/sc2/content/uqm.rmp
@@ -145,7 +145,7 @@ graphics.ambanim = GFXRES:base/nav/ambientanim.ani
 graphics.aquhelix = GFXRES:base/lander/energy/aquahelix.ani
 graphics.arispace = GFXRES:base/nav/quasispace.ani
 graphics.astbig = GFXRES:base/battle/asteroid.big
-graphics.astmed = GFXRES:base/battle/asteroid.mid
+graphics.astmed = GFXRES:base/battle/asteroid.med
 graphics.astsml = GFXRES:base/battle/asteroid.sml
 graphics.blabig = GFXRES:base/battle/blabig.ani
 graphics.blamed = GFXRES:base/battle/blamed.ani