--- a/host.rc	Wed May 08 09:57:58 2013 +0200
+++ b/host.rc	Tue May 21 23:16:03 2013 +0200
@@ -78,11 +78,16 @@
 	    "/ running in a development environment...
 	    includes := includes , '-I../../../stx/include '.
 	] ifFalse:[
-	    "/ if this is a production program, dont care for a warning
-	    (Smalltalk isStandAloneApp or:[Smalltalk isHeadless])
-	    ifFalse:[
-		'host.rc [warning]: no >>include<< directory found along your path.' infoPrintCR.
-		'host.rc [warning]: this might affect stc-compilation from within the browser.' infoPrintCR.
+	    ('../../include' asFilename exists) ifTrue:[
+		"/ running in a development environment...
+		includes := includes , '-I../../include '.
+	    ] ifFalse:[
+		"/ if this is a production program, dont care for a warning
+		(Smalltalk isStandAloneApp or:[Smalltalk isHeadless])
+		ifFalse:[
+		    'host.rc [warning]: no >>include<< directory found along your path.' infoPrintCR.
+		    'host.rc [warning]: this might affect stc-compilation from within the browser.' infoPrintCR.
+		]
 	    ]
 	]
     ].