diff --git a/include/wx/aui/framemanager.h b/include/wx/aui/framemanager.h
index fdf29d4f8e..300e767125 100644
--- a/include/wx/aui/framemanager.h
+++ b/include/wx/aui/framemanager.h
@@ -496,7 +496,7 @@ public:
 
     void Update();
 
-    wxString SavePaneInfo(wxAuiPaneInfo& pane);
+    wxString SavePaneInfo(const wxAuiPaneInfo& pane);
     void LoadPaneInfo(wxString panePart, wxAuiPaneInfo &pane);
     wxString SavePerspective();
     bool LoadPerspective(const wxString& perspective, bool update = true);
diff --git a/interface/wx/aui/framemanager.h b/interface/wx/aui/framemanager.h
index e9661b3595..0c0ba66a0f 100644
--- a/interface/wx/aui/framemanager.h
+++ b/interface/wx/aui/framemanager.h
@@ -394,7 +394,7 @@ public:
         @sa LoadPerspective
         @sa SavePerspective
     */
-    wxString SavePaneInfo(wxAuiPaneInfo& pane);
+    wxString SavePaneInfo(const wxAuiPaneInfo& pane);
 
     /**
         Saves the entire user interface layout into an encoded wxString, which
diff --git a/src/aui/framemanager.cpp b/src/aui/framemanager.cpp
index cb0dead22e..59d40f9784 100644
--- a/src/aui/framemanager.cpp
+++ b/src/aui/framemanager.cpp
@@ -1434,7 +1434,7 @@ static wxString EscapeDelimiters(const wxString& s)
     return result;
 }
 
-wxString wxAuiManager::SavePaneInfo(wxAuiPaneInfo& pane)
+wxString wxAuiManager::SavePaneInfo(const wxAuiPaneInfo& pane)
 {
     wxString result = wxT("name=");
     result += EscapeDelimiters(pane.name);