--- a/src/sdk/configmanager.cpp
+++ b/src/sdk/configmanager.cpp
@@ -612,7 +612,7 @@
         return wxStandardPathsBase::Get().GetUserDataDir();
 #else
 #ifdef __linux__
-    return wxString::FromUTF8(g_build_filename (g_get_user_config_dir(), "codeblocks", NULL));
+    return wxString::FromUTF8(g_build_filename (g_get_user_config_dir(), "codeblocks", (void *)NULL));
 #else
     return wxStandardPathsBase::Get().GetUserDataDir();
 #endif // __linux__
@@ -1586,7 +1586,7 @@
     wxString dataPathUser = ConfigManager::config_folder + wxFILE_SEP_PATH + _T("share");
 #ifdef __linux__
     if (!has_alternate_user_data_path)
-      dataPathUser = wxString::FromUTF8(g_build_filename (g_get_user_data_dir(), NULL));
+      dataPathUser = wxString::FromUTF8(g_build_filename (g_get_user_data_dir(), (void *)NULL));
 #endif // __linux__
 
     ConfigManager::data_path_user = dataPathUser + wxFILE_SEP_PATH + _T("codeblocks");
@@ -1612,14 +1612,14 @@
 
     // ConfigManager::config_folder might be the portable-path but we want to migrate the standard-conform folder,
     // but only if it not already exists
-    wxString newConfigFolder = wxString::FromUTF8(g_build_filename (g_get_user_config_dir(), "codeblocks", NULL));
+    wxString newConfigFolder = wxString::FromUTF8(g_build_filename (g_get_user_config_dir(), "codeblocks", (void *)NULL));
     // if the new config folder already exist, we step out immediately
     if (wxDirExists(newConfigFolder))
         return;
 
     wxString oldConfigFolder = wxStandardPaths::Get().GetUserDataDir();
     wxString oldDataFolder = oldConfigFolder + wxFILE_SEP_PATH + _T("share") + wxFILE_SEP_PATH + _T("codeblocks");
-    wxString newDataFolder = wxString::FromUTF8(g_build_filename (g_get_user_data_dir(), NULL)) + wxFILE_SEP_PATH + _T("codeblocks");
+    wxString newDataFolder = wxString::FromUTF8(g_build_filename (g_get_user_data_dir(), (void *)NULL)) + wxFILE_SEP_PATH + _T("codeblocks");
     wxString msg;
     msg = F(_("The places where the configuration files and user-data files are stored\n"
               "have been changed to be more standard-conform.\n"