diff --git a/tests/auto/wayland/client/tst_client.cpp b/tests/auto/wayland/client/tst_client.cpp
index 83b9e6ce0b3..e7729ce8b20 100644
--- a/tests/auto/wayland/client/tst_client.cpp
+++ b/tests/auto/wayland/client/tst_client.cpp
@@ -507,7 +507,8 @@ void tst_WaylandClient::longWindowTitleWithUtf16Characters()
 
 int main(int argc, char **argv)
 {
-    setenv("XDG_RUNTIME_DIR", ".", 1);
+    QTemporaryDir tmpRuntimeDir;
+    setenv("XDG_RUNTIME_DIR", tmpRuntimeDir.path().toLocal8Bit(), 1);
     setenv("QT_QPA_PLATFORM", "wayland", 1); // force QGuiApplication to use wayland plugin
 
     MockCompositor compositor;
diff --git a/tests/auto/wayland/inputcontext/tst_inputcontext.cpp b/tests/auto/wayland/inputcontext/tst_inputcontext.cpp
index b1a5a7f17f8..3e6de4a0800 100644
--- a/tests/auto/wayland/inputcontext/tst_inputcontext.cpp
+++ b/tests/auto/wayland/inputcontext/tst_inputcontext.cpp
@@ -173,7 +173,8 @@ void tst_inputcontext::inputContextReconfigurationWhenTogglingTextInputExtension
 
 int main(int argc, char *argv[])
 {
-    qputenv("XDG_RUNTIME_DIR", ".");
+    QTemporaryDir tmpRuntimeDir;
+    qputenv("XDG_RUNTIME_DIR", tmpRuntimeDir.path().toLocal8Bit());
     qputenv("QT_QPA_PLATFORM", "wayland");
 
     tst_inputcontext tc;
diff --git a/tests/auto/wayland/shared/mockcompositor.h b/tests/auto/wayland/shared/mockcompositor.h
index 05bf32c8d50..f5264ccf611 100644
--- a/tests/auto/wayland/shared/mockcompositor.h
+++ b/tests/auto/wayland/shared/mockcompositor.h
@@ -77,7 +77,8 @@ public:
 #define QCOMPOSITOR_TEST_MAIN(test) \
 int main(int argc, char **argv) \
 { \
-    setenv("XDG_RUNTIME_DIR", ".", 1); \
+    QTemporaryDir tmpRuntimeDir; \
+    setenv("XDG_RUNTIME_DIR", tmpRuntimeDir.path().toLocal8Bit(), 1); \
     setenv("XDG_CURRENT_DESKTOP", "qtwaylandtests", 1); \
     setenv("QT_QPA_PLATFORM", "wayland", 1); \
     test tc; \