diff --git a/include/wx/cmdline.h b/include/wx/cmdline.h
index ca9dbc04ea..a3a685ce3f 100644
--- a/include/wx/cmdline.h
+++ b/include/wx/cmdline.h
@@ -100,20 +100,20 @@ public:
 
     // default ctor or ctor giving the cmd line in either Unix or Win form
     wxCmdLineParser() { Init(); }
-    wxCmdLineParser(int argc, char **argv) { Init(); SetCmdLine(argc, argv); }
+    wxCmdLineParser(int argc, wxChar **argv) { Init(); SetCmdLine(argc, argv); }
     wxCmdLineParser(const wxString& cmdline) { Init(); SetCmdLine(cmdline); }
 
     // the same as above, but also gives the cmd line description - otherwise,
     // use AddXXX() later
     wxCmdLineParser(const wxCmdLineEntryDesc *desc)
         { Init(); SetDesc(desc); }
-    wxCmdLineParser(const wxCmdLineEntryDesc *desc, int argc, char **argv)
+    wxCmdLineParser(const wxCmdLineEntryDesc *desc, int argc, wxChar **argv)
         { Init(); SetCmdLine(argc, argv); SetDesc(desc); }
     wxCmdLineParser(const wxCmdLineEntryDesc *desc, const wxString& cmdline)
         { Init(); SetCmdLine(cmdline); SetDesc(desc); }
 
     // set cmd line to parse after using one of the ctors which don't do it
-    void SetCmdLine(int argc, char **argv);
+    void SetCmdLine(int argc, wxChar **argv);
     void SetCmdLine(const wxString& cmdline);
 
     // not virtual, don't use this class polymorphically
diff --git a/src/common/cmdline.cpp b/src/common/cmdline.cpp
index 5b3610b102..46517df3a2 100644
--- a/src/common/cmdline.cpp
+++ b/src/common/cmdline.cpp
@@ -160,7 +160,7 @@ struct wxCmdLineParserData
 
     // methods
     wxCmdLineParserData();
-    void SetArguments(int argc, char **argv);
+    void SetArguments(int argc, wxChar **argv);
     void SetArguments(const wxString& cmdline);
 
     int FindOption(const wxString& name);
@@ -185,7 +185,7 @@ wxCmdLineParserData::wxCmdLineParserData()
 #endif
 }
 
-void wxCmdLineParserData::SetArguments(int argc, char **argv)
+void wxCmdLineParserData::SetArguments(int argc, wxChar **argv)
 {
     m_arguments.Empty();
 
@@ -283,7 +283,7 @@ void wxCmdLineParser::Init()
     m_data = new wxCmdLineParserData;
 }
 
-void wxCmdLineParser::SetCmdLine(int argc, char **argv)
+void wxCmdLineParser::SetCmdLine(int argc, wxChar **argv)
 {
     m_data->SetArguments(argc, argv);
 }