diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index 8337da6091..6ea2ab7581 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -296,8 +296,7 @@ static void EnsureParentHasControlParentStyle(wxWindow *parent)
 
 // GetCursorPos can return an error, so use this function
 // instead.
-// Error originally observed with WinCE, but later using Remote Desktop
-// to connect to XP.
+// Error observed when using Remote Desktop to connect to XP.
 void wxGetCursorPosMSW(POINT* pt)
 {
     if (!GetCursorPos(pt))
diff --git a/src/unix/dialup.cpp b/src/unix/dialup.cpp
index b17b2f98d9..78b09aa9b8 100644
--- a/src/unix/dialup.cpp
+++ b/src/unix/dialup.cpp
@@ -550,7 +550,6 @@ wxDialUpManagerImpl::NetConnection wxDialUpManagerImpl::CheckConnectAndPing()
 wxDialUpManagerImpl::NetConnection wxDialUpManagerImpl::CheckConnect()
 {
    // second method: try to connect to a well known host:
-   // This can be used under Win 9x, too!
    struct hostent     *hp;
    struct sockaddr_in  serv_addr;
 
diff --git a/src/unix/net.cpp b/src/unix/net.cpp
index 318297d92d..0eb922ab14 100644
--- a/src/unix/net.cpp
+++ b/src/unix/net.cpp
@@ -382,7 +382,6 @@ wxDialUpManagerImpl::CheckStatusInternal(void)
    }
 
    // second method: try to connect to well known host:
-   // This can be used under Win 9x, too!
    struct hostent     *hp;
    struct sockaddr_in  serv_addr;
    int sockfd;
diff --git a/tests/drawing/fonttest.cpp b/tests/drawing/fonttest.cpp
index c7c0a0457d..70c3c8e4cd 100644
--- a/tests/drawing/fonttest.cpp
+++ b/tests/drawing/fonttest.cpp
@@ -58,7 +58,7 @@ void GraphicsContextDrawingTestCase::DoFontDrawings (wxGraphicsContext *gc)
     gc->DrawText( wxT("That is text"), 20, 10, wxDegToRad(-45), gbTextBackground );
 
     // use wxSWISS_FONT and not wxNORMAL_FONT as the latter can't be rotated
-    // under Win9x (it is not TrueType)
+    // (it is not TrueType)
     gc->SetFont( wxFont(wxFontInfo(12).Family(wxFONTFAMILY_SWISS)), *wxBLACK );
 
     wxString text;
diff --git a/utils/emulator/src/emulator.cpp b/utils/emulator/src/emulator.cpp
index 556135825c..1f6306ab53 100644
--- a/utils/emulator/src/emulator.cpp
+++ b/utils/emulator/src/emulator.cpp
@@ -46,7 +46,7 @@
 // resources
 // ----------------------------------------------------------------------------
 
-// the application icon (under Windows and OS/2 it is in resources)
+// the application icon (under Windows it is in resources)
 #ifndef wxHAS_IMAGES_IN_RESOURCES
     #include "emulator.xpm"
 #endif