diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index 351ced98ea..a431fd8e9f 100644
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -1722,7 +1722,9 @@ protected:
 
 inline bool wxDateTime::IsInStdRange() const
 {
-    return m_time >= 0l && (m_time / TIME_T_FACTOR) < LONG_MAX;
+    // currently we don't know what is the real type of time_t so prefer to err
+    // on the safe side and limit it to 32 bit values which is safe everywhere
+    return m_time >= 0l && (m_time / TIME_T_FACTOR) < wxINT32_MAX;
 }
 
 /* static */