diff --git a/worlds/Starcraft 2/progression.txt b/worlds/Starcraft 2/progression.txt
index 14fd8416d..8e51ed94a 100644
--- a/worlds/Starcraft 2/progression.txt	
+++ b/worlds/Starcraft 2/progression.txt	
@@ -539,7 +539,7 @@ Ionic Wavelength Flux (Phoenix/Mirage/Skirmisher): useful
 Jackson's Revenge: useful
 Jerry-Rigged Patchup (Vulture): useful
 Jet Pack Overdrive (Reaper): useful
-Jormungandr Strain (Nydus Worm/Echidna Worm): unknown
+Jormungandr Strain (Nydus Worm/Echidna Worm): useful
 Jotun: useful
 Judicator's Veil (Arbiter): useful
 Juggernaut Plating (Firebat): useful