diff --git a/code/game/dna.dm b/code/game/dna.dm
index c6b27658158..7f8d5a9d6ce 100644
--- a/code/game/dna.dm
+++ b/code/game/dna.dm
@@ -188,7 +188,9 @@
 	return result
 
 /proc/setblock(istring, blocknumber, replacement, blocksize)
-	if(!istring || !blocknumber || !replacement || !blocksize)	return 0
+	if(!blocknumber)
+		return istring
+	if(!istring || !replacement || !blocksize)	return 0
 	var/result = getleftblocks(istring, blocknumber, blocksize) + replacement + getrightblocks(istring, blocknumber, blocksize)
 	return result
 
diff --git a/code/modules/awaymissions/zlevel.dm b/code/modules/awaymissions/zlevel.dm
index f787baa7e2e..b98a3447d90 100644
--- a/code/modules/awaymissions/zlevel.dm
+++ b/code/modules/awaymissions/zlevel.dm
@@ -28,10 +28,12 @@ proc/createRandomZlevel()
 	//	var/value = null
 
 		if (pos)
-			name = lowertext(copytext(t, 1, pos))
+            // No, don't do lowertext here, that breaks paths on linux
+			name = copytext(t, 1, pos)
 		//	value = copytext(t, pos + 1)
 		else
-			name = lowertext(t)
+            // No, don't do lowertext here, that breaks paths on linux
+			name = t
 
 		if (!name)
 			continue
@@ -56,4 +58,4 @@ proc/createRandomZlevel()
 
 	else
 		world << "\red \b No away missions found."
-		return
\ No newline at end of file
+		return