diff --git a/src/common/technologies/MTG_naval.txt b/src/common/technologies/MTG_naval.txt
index b082ec5..9e0f008 100755
--- a/src/common/technologies/MTG_naval.txt
+++ b/src/common/technologies/MTG_naval.txt
@@ -5294,6 +5294,9 @@ technologies = {
 			name = mtgnavalfolder
 			position = { x = -2 y = 23 }
 		}
+		dependencies = {
+			nuclear_reactor = 1
+		}
 
 		ai_will_do = {
 			factor = 1
diff --git a/src/gfx/interface/technologies/doctrine_tree/flight_deck_management.png b/src/gfx/interface/technologies/doctrine_tree/flight_deck_management.png
index a2875c3..d316ebf 100755
Binary files a/src/gfx/interface/technologies/doctrine_tree/flight_deck_management.png and b/src/gfx/interface/technologies/doctrine_tree/flight_deck_management.png differ