diff --git a/releng.wtpbuilder/build.properties b/releng.wtpbuilder/build.properties
index 7a68df3098447ec1a2282b36b74d2379efe55532..d58a431544e87d54ecf49ed8502dd740a9d91ee3 100644
--- a/releng.wtpbuilder/build.properties
+++ b/releng.wtpbuilder/build.properties
@@ -127,7 +127,7 @@ archivesFormat=*,*,*-antZip
 # being used (JDT Compiler, in our case).
 # 'showversion' causes the version of JDT Compiler to be 
 # printed to the compiler log file. 
-compilerArg=-showversion -encoding ISO-8859-1 -warn:-discouraged,serial,unusedImport
+compilerArg=-cp .[+org/eclipse/jst/**:+org/eclipse/wst/**]; -showversion -encoding ISO-8859-1 -warn:-discouraged,serial +warn:uselessTypeCheck
 
 
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