diff --git a/releng.wtpbuilder/components/wtp-patches312-tests/build.properties b/releng.wtpbuilder/components/wtp-patches312-tests/build.properties
index 584e4c9..52aa536 100644
--- a/releng.wtpbuilder/components/wtp-patches312-tests/build.properties
+++ b/releng.wtpbuilder/components/wtp-patches312-tests/build.properties
@@ -34,9 +34,11 @@
 # using the JDT Compiler Adapter to compile.
 javacVerbose=true
 
-sign=false
+sign=true
 
 p2.gathering=true
+p2.compress=true
+skipMirroring=true
 
 compilelogsDir=testcompilelogs
 
diff --git a/releng.wtpbuilder/components/wtp-patches312/build.properties b/releng.wtpbuilder/components/wtp-patches312/build.properties
index 403205e..5733dea 100644
--- a/releng.wtpbuilder/components/wtp-patches312/build.properties
+++ b/releng.wtpbuilder/components/wtp-patches312/build.properties
@@ -37,6 +37,8 @@
 sign=true
 
 p2.gathering=true
+p2.compress=true
+skipMirroring=true
 
 compilelogsDir=compilelogs