diff --git a/src/slic3r/GUI/NotificationManager.cpp b/src/slic3r/GUI/NotificationManager.cpp
index 0cab05495..1b208471e 100644
--- a/src/slic3r/GUI/NotificationManager.cpp
+++ b/src/slic3r/GUI/NotificationManager.cpp
@@ -515,7 +515,9 @@ void NotificationManager::PopNotification::render_text(ImGuiWrapper& imgui, cons
 			ImGui::SetCursorPosY(win_size.y / 2 - win_size.y / 6 - m_line_height / 2);
 			imgui.text(m_text1.substr(0, m_endlines[0]).c_str());
 			// line2
-			std::string line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
+            std::string line = "";
+            if (m_text1.size() > m_endlines[0])
+                std::string line = m_text1.substr(m_endlines[0] + (m_text1[m_endlines[0]] == '\n' || m_text1[m_endlines[0]] == ' ' ? 1 : 0));
 			cursor_y = win_size.y / 2 + win_size.y / 6 - m_line_height / 2;
 			ImGui::SetCursorPosX(x_offset);
 			ImGui::SetCursorPosY(cursor_y);