diff --git a/source/gui/place.cpp b/source/gui/place.cpp
index a10246f9..6e1e673a 100644
--- a/source/gui/place.cpp
+++ b/source/gui/place.cpp
@@ -15,6 +15,7 @@
 #include <cmath>
 #include <map>
 #include <deque>
+#include <algorithm>
 #include <nana/push_ignore_diagnostic>
 #include <nana/deploy.hpp>
 #include <nana/gui/place.hpp>
@@ -816,7 +817,7 @@ namespace nana
 				if ((!child->is_fixed()) && child->max_px.empty() && is_back(child) && (endpos != area.right()))
 					endpos = area.right();
 
-				child_area.w_ref() = static_cast<unsigned>(endpos - child_area.x());
+				child_area.w_ref() = static_cast<unsigned>((std::max)(endpos - child_area.x(), 0));
 
 				child->field_area = child_area.result();
 				position += child_px;