diff --git a/test/test_dns_updater.cpp b/test/test_dns_updater.cpp
index 5d92cd3..8697d4c 100644
--- a/test/test_dns_updater.cpp
+++ b/test/test_dns_updater.cpp
@@ -5,9 +5,9 @@
 #include <fstream>
 #include <experimental/filesystem>
 
-static constexpr auto IN_FILE = "/tmp/netif_state";
-static constexpr auto OUT_FILE = "/tmp/resolv.conf";
-static constexpr auto COMPARE_FILE = "/tmp/resolv_compare.conf";
+static constexpr auto IN_FILE = "/tmp/" __BASE_FILE__ "netif_state";
+static constexpr auto OUT_FILE = "/tmp/" __BASE_FILE__ "resolv.conf";
+static constexpr auto COMPARE_FILE = "/tmp/" __BASE_FILE__ "resolv_compare.conf";
 static constexpr auto DNS_ENTRY_1 = "DNS=1.2.3.4\n";
 static constexpr auto DNS_ENTRY_2 = "DNS=5.6.7.8\n";
 
diff --git a/test/test_rtnetlink.cpp b/test/test_rtnetlink.cpp
index 79d9547..203019d 100644
--- a/test/test_rtnetlink.cpp
+++ b/test/test_rtnetlink.cpp
@@ -79,7 +79,8 @@
 
         void setConfDir()
         {
-            confDir = "/tmp/NetworkManager.YYYY";
+            char tmp[] = "/tmp/NetworkManager.XXXXXX";
+            confDir = mkdtemp(tmp);
             manager->setConfDir(confDir);
         }
 
diff --git a/test/test_watch.cpp b/test/test_watch.cpp
index dac43b3..3ab3e22 100644
--- a/test/test_watch.cpp
+++ b/test/test_watch.cpp
@@ -6,7 +6,7 @@
 #include <fstream>
 #include <experimental/filesystem>
 
-static constexpr auto TRIGGER_FILE = "/tmp/netif_state";
+static constexpr auto TRIGGER_FILE = "/tmp/" __BASE_FILE__ "netif_state";
 
 namespace fs = std::experimental::filesystem;