diff --git a/include/wx/msw/private/fswatcher.h b/include/wx/msw/private/fswatcher.h
index fdbeef68a3..1442432a35 100644
--- a/include/wx/msw/private/fswatcher.h
+++ b/include/wx/msw/private/fswatcher.h
@@ -273,8 +273,8 @@ protected:
     struct wxEventProcessingData
     {
         wxEventProcessingData(const FILE_NOTIFY_INFORMATION* ne,
-                              const wxFSWatchEntryMSW* watch) :
-            nativeEvent(ne), watch(watch)
+                              const wxFSWatchEntryMSW* watch_) :
+            nativeEvent(ne), watch(watch_)
         {}
 
         const FILE_NOTIFY_INFORMATION* nativeEvent;
diff --git a/src/generic/datavgen.cpp b/src/generic/datavgen.cpp
index 32f781d7c7..aee2652228 100644
--- a/src/generic/datavgen.cpp
+++ b/src/generic/datavgen.cpp
@@ -3074,10 +3074,10 @@ int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
 class RowToTreeNodeJob: public DoJob
 {
 public:
-    RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
+    RowToTreeNodeJob( unsigned int row_ , int current_, wxDataViewTreeNode * node )
     {
-        this->row = row;
-        this->current = current;
+        this->row = row_;
+        this->current = current_;
         ret = NULL;
         parent = node;
     }
diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index ae5937c287..c8df19115c 100644
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -630,9 +630,9 @@ private:
 };
 
 //// Initialize
-bool wxApp::Initialize(int& argc, wxChar **argv)
+bool wxApp::Initialize(int& argc_, wxChar **argv_)
 {
-    if ( !wxAppBase::Initialize(argc, argv) )
+    if ( !wxAppBase::Initialize(argc_, argv_) )
         return false;
 
     // ensure that base cleanup is done if we return too early
diff --git a/src/msw/ole/dataobj.cpp b/src/msw/ole/dataobj.cpp
index 097a576311..75aace6905 100644
--- a/src/msw/ole/dataobj.cpp
+++ b/src/msw/ole/dataobj.cpp
@@ -233,8 +233,8 @@ private:
     {
     public:
         // Ctor takes ownership of the pointers.
-        SystemDataEntry(FORMATETC *pformatetc, STGMEDIUM *pmedium)
-            : pformatetc(pformatetc), pmedium(pmedium)
+        SystemDataEntry(FORMATETC *pformatetc_, STGMEDIUM *pmedium_)
+            : pformatetc(pformatetc_), pmedium(pmedium_)
         {
         }