diff --git a/src/board.c b/src/board.c
index 9d9ada4..d8ec920 100644
--- a/src/board.c
+++ b/src/board.c
@@ -86,14 +86,18 @@ static void board_exit(char* str) {
 
 static void board_stealCreds(char* str) {
 	(void)str;
+	Pilot* p;
+
+	p = pilot_get(player_target);
 
 	if(board_credits == 0) {
+		// Can't steal from the poor. ;)
 		player_message("The ship has no SCreds left");
 		return;
 	}
 
-	// Calculate success - TODO: make this based on crew.
-	if(RNG(0, 100) < 50) {
+	// Calculate success.
+	if(RNG(0, 100) < (int)(50. * (double)p->ship->crew/(double)player->ship->crew)) {
 	 board_fail();
 	 return;
 	}
@@ -109,10 +113,12 @@ static void board_fail(void) {
 	Pilot* p;
 
 	if(RNG(0, 2)==0) {
+		// 33% of instant death.
 		p = pilot_get(player_target);
 		p->armour = -1;
 		player_message("You have tripped the ship's self destruct mechanism!");
 	} else
+		// You just got locked out!!
 		player_message("The ship's security system locks you out!");
 	
 	board_exit(NULL);