diff --git a/tests/longlong/longlongtest.cpp b/tests/longlong/longlongtest.cpp
index 043a259cef..3d4815db09 100644
--- a/tests/longlong/longlongtest.cpp
+++ b/tests/longlong/longlongtest.cpp
@@ -304,7 +304,7 @@ void LongLongTestCase::ToString()
     CPPUNIT_ASSERT( a.ToString() == _T("-1311768467139281697") );
 
     wxLongLong llMin(LONG_MIN, 0);
-    CPPUNIT_ASSERT( a.ToString() == _T("-9223372036854775808") );
+    CPPUNIT_ASSERT( llMin.ToString() == _T("-9223372036854775808") );
 
 #if wxUSE_LONGLONG_WX
     wxLongLongWx a1(a.GetHi(), a.GetLo());