diff --git a/tools/build-system/hudson-sflphone-script.sh b/tools/build-system/hudson-sflphone-script.sh
index 8db656e038039cfc10587a2ffd704a02fad47eea..6231dbaf9b64c789b1b4ecc3bc724282be159d6c 100755
--- a/tools/build-system/hudson-sflphone-script.sh
+++ b/tools/build-system/hudson-sflphone-script.sh
@@ -121,11 +121,14 @@ function build_contrib {
         ../bootstrap
         # list dependencies that aren't detected by contrib
         make list
-        # FIXME: this is a hack until we remove all libcommoncpp.so linked libs on Jenkins
-        make .zrtpcpp
+
         # FIXME: this is very slow but it's the best we can do until we migrate
         # to a builder with more up to date packages
-        make
+        if [ "$DEBUG_CONTRIB" != "" ]; then
+            make
+        else
+            make -j
+        fi
         popd
     else
         # We're on 1.4.x