diff --git a/PowerEditor/src/NppBigSwitch.cpp b/PowerEditor/src/NppBigSwitch.cpp
index 9404c7bc..0e2d709c 100644
--- a/PowerEditor/src/NppBigSwitch.cpp
+++ b/PowerEditor/src/NppBigSwitch.cpp
@@ -419,6 +419,11 @@ LRESULT Notepad_plus::process(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lPa
 			getMainClientRect(rc);
 			_dockingManager.reSizeTo(rc);
 
+			if (_pDocMap)
+			{
+				_pDocMap->doMove();
+			}
+
 			result = TRUE;
 		}
 		break;
diff --git a/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp b/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
index 402dcda9..8defa479 100644
--- a/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
+++ b/PowerEditor/src/WinControls/DocumentMap/documentMap.cpp
@@ -87,7 +87,7 @@ void DocumentMap::doMove()
 	POINT pt = {0,0};
 	::ClientToScreen(_pScintillaEditView->getHSelf(), &pt);
 	_pScintillaEditView->getClientRect(rc);
-	::MoveWindow(_vzDlg.getHSelf(), pt.x, pt.y, (rc.right - rc.left) -4, (rc.bottom - rc.top) - 4, TRUE);
+	::MoveWindow(_vzDlg.getHSelf(), pt.x, pt.y, (rc.right - rc.left), (rc.bottom - rc.top), TRUE);
 }
 
 void DocumentMap::fold(int line, bool foldOrNot)