1 files changed, 7 insertions, 1 deletions
diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 8b0820b941..74a5d0ac19 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -1652,9 +1652,15 @@ static LONG WINAPI windowsFaultHandler(struct _EXCEPTION_POINTERS *exInfo)
 }
 #endif // Q_OS_WIN) && !Q_OS_WINRT
 
+static void qputenvIfEmpty(const char *name, const QByteArray &value)
+{
+    if (qEnvironmentVariableIsEmpty(name))
+        qputenv(name, value);
+}
+
 static void initEnvironment()
 {
-    qputenv("QT_LOGGING_TO_CONSOLE", "1");
+    qputenvIfEmpty("QT_LOGGING_TO_CONSOLE", "1");
     qputenv("QT_QTESTLIB_RUNNING", "1");
 }