diff --git a/src/alien.cpp b/src/alien.cpp
index cce78c6..331ac06 100644
--- a/src/alien.cpp
+++ b/src/alien.cpp
@@ -1084,14 +1084,18 @@ bool alien_add()
 			alienArray[5] = CD_MOBILE_RAY;
 			break;
 		case MISN_INTERCEPTION:
-			numberOfAliens = 3;
+			numberOfAliens = 1;
 			alienArray[0] = CD_DUALFIGHTER;
-			alienArray[1] = CD_MISSILEBOAT;
-			alienArray[2] = CD_AIMFIGHTER;
-			if (game.system == SYSTEM_MORDOR)
+			if (game.system > SYSTEM_SPIRIT)
 			{
-				numberOfAliens = 4;
-				alienArray[3] = CD_PROTOFIGHTER;
+				numberOfAliens = 3;
+				alienArray[1] = CD_MISSILEBOAT;
+				alienArray[2] = CD_AIMFIGHTER;
+				if (game.system == SYSTEM_MORDOR)
+				{
+					numberOfAliens = 4;
+					alienArray[3] = CD_PROTOFIGHTER;
+				}
 			}
 			break;
 		default:
diff --git a/src/intermission.cpp b/src/intermission.cpp
index 31d2635..3489a37 100644
--- a/src/intermission.cpp
+++ b/src/intermission.cpp
@@ -1213,7 +1213,10 @@ int intermission()
 	switch (game.system)
 	{
 		case SYSTEM_SPIRIT:
-			interceptionChance = 0;
+			if (game.difficulty == DIFFICULTY_ORIGINAL)
+				interceptionChance = 0;
+			else
+				interceptionChance = 1. / 600.;
 			break;
 		case SYSTEM_EYANANTH:
 			interceptionChance = 1. / 300.;