diff --git a/code/nel/include/nel/misc/string_common.h b/code/nel/include/nel/misc/string_common.h
index fac53be66..a5fb43eb1 100644
--- a/code/nel/include/nel/misc/string_common.h
+++ b/code/nel/include/nel/misc/string_common.h
@@ -195,9 +195,11 @@ inline std::string toString(const sint64 &val) { return toString("%"NL_I64"d", v
 // error fix for size_t? gcc 4.1.2 requested this type instead of size_t ...
 inline std::string toString(const long unsigned int &val)
 {
-	if (sizeof(long unsigned int) == 8)
-		return toString((uint64)val);
+#ifdef _LP64
+	return toString((uint64)val);
+#else
 	return toString((uint32)val);
+#endif
 }
 
 #	endif
@@ -210,6 +212,7 @@ inline std::string toString(const size_t &val) { return toString("%"NL_I64"u", v
 inline std::string toString(const size_t &val) { return toString("%u", val); }
 #endif
 #endif
+
 inline std::string toString(const float &val) { return toString("%f", val); }
 inline std::string toString(const double &val) { return toString("%lf", val); }
 inline std::string toString(const bool &val) { return toString("%u", val?1:0); }