diff --git a/tests/datetime/datetimetest.cpp b/tests/datetime/datetimetest.cpp
index 9917d15c99..5ef360ff84 100644
--- a/tests/datetime/datetimetest.cpp
+++ b/tests/datetime/datetimetest.cpp
@@ -1449,15 +1449,15 @@ void DateTimeTestCase::TestDateOnly()
     CPPUNIT_ASSERT_EQUAL( wxDateTime::Today(), wxDateTime::Now().GetDateOnly() );
 }
 
-#if defined(__WINDOWS__) || defined(__WXOSX__)
-
-// This function is defined in src/common/intl.cpp and as it is not public we
-// need to declare it here explicitly.
-WXDLLIMPEXP_BASE
-wxString wxTranslateFromUnicodeFormat(const wxString& fmt);
-
 void DateTimeTestCase::TestTranslateFromUnicodeFormat()
 {
+#if defined(__WINDOWS__) || defined(__WXOSX__)
+    // This function is defined in src/common/intl.cpp and as it is not public we
+    // need to declare it here explicitly.
+    WXDLLIMPEXP_BASE
+    wxString wxTranslateFromUnicodeFormat(const wxString& fmt);
+
+
     // Test single quote handling...
 
     CPPUNIT_ASSERT_EQUAL("",   wxTranslateFromUnicodeFormat("'"));
@@ -1484,8 +1484,7 @@ void DateTimeTestCase::TestTranslateFromUnicodeFormat()
 
     CPPUNIT_ASSERT_EQUAL("'%H o'clock: It's about time'",
         wxTranslateFromUnicodeFormat("''H 'o''clock: It''s about time'''"));
+#endif // ports having wxTranslateFromUnicodeFormat()
 }
 
-#endif // ports having wxTranslateFromUnicodeFormat()
-
 #endif // wxUSE_DATETIME