diff --git a/GameData/RP-1/Contracts/Earth Crewed/OrbitalTestFlight.cfg b/GameData/RP-1/Contracts/Earth Crewed/OrbitalTestFlight.cfg
index 01e050a0794..bdcd10d11d3 100644
--- a/GameData/RP-1/Contracts/Earth Crewed/OrbitalTestFlight.cfg	
+++ b/GameData/RP-1/Contracts/Earth Crewed/OrbitalTestFlight.cfg	
@@ -101,7 +101,17 @@ CONTRACT_TYPE
 			hideChildren = true
    			disableOnStateChange = false
 		}
-		
+		PARAMETER
+		{
+			name = NoUnpressurized
+			type = PartValidation
+			title = Cockpit is pressurized and space-capable
+			hideChildren = true
+			NONE
+			{
+				partModule = ModuleUnpressurizedCockpit
+			}
+		}		
 		PARAMETER
 		{
 			name = NoCrew