diff --git a/test/runtests.py b/test/runtests.py
index 23e6f3ba..89bb748b 100755
--- a/test/runtests.py
+++ b/test/runtests.py
@@ -453,7 +453,7 @@ class SyncEvolutionTest(Action):
             if not os.access(backenddir, os.F_OK):
                 # try relative to client-test inside the current directory
                 backenddir = "backends"
-            basecmd = "CLIENT_TEST_SERVER=%s CLIENT_TEST_SOURCES=%s %s SYNCEVOLUTION_BACKEND_DIR=%s SYNC_EVOLUTION_EVO_CALENDAR_DELAY=1 CLIENT_TEST_ALARM=1200 CLIENT_TEST_LOG=%s CLIENT_TEST_EVOLUTION_PREFIX=file://%s/databases %s env LD_LIBRARY_PATH=build-synthesis/src/.libs %s ./client-test" % (self.serverName, ",".join(self.sources), self.testenv, backenddir, self.serverlogs, context.workdir, self.runner, self.testPrefix);
+            basecmd = "CLIENT_TEST_SERVER=%s CLIENT_TEST_SOURCES=%s %s SYNCEVOLUTION_BACKEND_DIR=%s SYNC_EVOLUTION_EVO_CALENDAR_DELAY=1 CLIENT_TEST_ALARM=1200 CLIENT_TEST_LOG=%s CLIENT_TEST_EVOLUTION_PREFIX=file://%s/databases %s env LD_LIBRARY_PATH=build-synthesis/src/.libs PATH=backends/webdav:$PATH %s ./client-test" % (self.serverName, ",".join(self.sources), self.testenv, backenddir, self.serverlogs, context.workdir, self.runner, self.testPrefix);
             if self.tests:
                 tests = []
                 for test in self.tests: