diff --git a/source/pdo_sqlsrv/pdo_dbh.cpp b/source/pdo_sqlsrv/pdo_dbh.cpp
index 7c08ffb0..c1c63a22 100644
--- a/source/pdo_sqlsrv/pdo_dbh.cpp
+++ b/source/pdo_sqlsrv/pdo_dbh.cpp
@@ -351,7 +351,7 @@ struct pdo_dbh_methods pdo_sqlsrv_dbh_methods = {
 
 
 // log a function entry point
-#ifdef __linux__
+#ifndef _WIN32
 #define PDO_LOG_DBH_ENTRY \
 { \
     pdo_sqlsrv_dbh* driver_dbh = reinterpret_cast<pdo_sqlsrv_dbh*>( dbh->driver_data ); \