diff --git a/Makefile b/Makefile
index 4ca8f2b..60f5fe5 100644
--- a/Makefile
+++ b/Makefile
@@ -63,7 +63,9 @@ all:
 install-servers:
 	set -ex; \
 	for server in $(DAV_SERVER); do \
-		(cd $(TESTSERVER_BASE)$$server && sh install.sh); \
+		if [ -f $(TESTSERVER_BASE)$$server/install.sh ]; then \
+			(cd $(TESTSERVER_BASE)$$server && sh install.sh); \
+		fi \
 	done
 
 install-test: install-servers install-dev
diff --git a/tests/storage/servers/fastmail/install.sh b/tests/storage/servers/fastmail/install.sh
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/storage/servers/icloud/install.sh b/tests/storage/servers/icloud/install.sh
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/storage/servers/skip/install.sh b/tests/storage/servers/skip/install.sh
deleted file mode 100755
index e69de29..0000000