diff --git a/releng.wtpbuilder/distribution/wtp.perf/perf.properties b/releng.wtpbuilder/distribution/wtp.perf/perf.properties
index d7254fd..327bb6f 100644
--- a/releng.wtpbuilder/distribution/wtp.perf/perf.properties
+++ b/releng.wtpbuilder/distribution/wtp.perf/perf.properties
@@ -6,10 +6,10 @@
 
 perf.dbloc=wtp-perf-db
 perf.config=wtpbuild
-perf.jvm=sun1.4.2
+perf.jvm=ibm1.5.0
 perf.ref.config=wtpbuild
 perf.ref.buildId=R20060729-0929
-perf.ref.jvm=sun1.4.2
+perf.ref.jvm=ibm1.5.0
 
 ###########################################################
 #
@@ -18,4 +18,4 @@
 ###########################################################
 
 #swt.lib.path=org.eclipse.swt.motif_3.1.0/os/linux/x86
-swt.lib.path=org.eclipse.swt.win32_3.1.0/os/win32/x86
\ No newline at end of file
+#swt.lib.path=org.eclipse.swt.win32_3.1.0/os/win32/x86
\ No newline at end of file