diff --git a/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp b/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
index 70a77986678..5a5fcdfa13b 100644
--- a/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
+++ b/tests/auto/testlib/selftests/extendedcompare/tst_extendedcompare.cpp
@@ -4,6 +4,8 @@
 #include <QTest>
 #include <QtCore/qtimer.h>
 
+#include <cstdio>
+
 QT_BEGIN_NAMESPACE
 
 #define COMPARE_WITH_TYPE(Type, arg1, arg2) \
@@ -103,7 +105,7 @@ template <> char *toString(const int *const &val)
 char *toString(const MyClass &val)
 {
     char *msg = new char[128];
-    qsnprintf(msg, 128, "MyClass(%d)", val.value());
+    std::snprintf(msg, 128, "MyClass(%d)", val.value());
     return msg;
 }
 
@@ -112,8 +114,8 @@ char *toString(const MyClass *val)
     if (val) {
         char *msg = new char[128];
         const auto value = val->value();
-        qsnprintf(msg, 128, "MyClass(%d) on memory address with index %d", value,
-                  ClassWithPointerGetter::valueToIndex(value));
+        std::snprintf(msg, 128, "MyClass(%d) on memory address with index %d", value,
+                      ClassWithPointerGetter::valueToIndex(value));
         return msg;
     }
     return toString(nullptr);
@@ -296,7 +298,7 @@ public:
 char *toString(const ClassWithDeferredSetter &val)
 {
     char *msg = new char[128];
-    qsnprintf(msg, 128, "ClassWithDeferredSetter(%d)", val.value());
+    std::snprintf(msg, 128, "ClassWithDeferredSetter(%d)", val.value());
     return msg;
 }