diff --git a/src/TGUI/Widgets/ListView.cpp b/src/TGUI/Widgets/ListView.cpp
index 0589c386..617fd634 100644
--- a/src/TGUI/Widgets/ListView.cpp
+++ b/src/TGUI/Widgets/ListView.cpp
@@ -359,7 +359,7 @@ namespace tgui
             return;
         }
 
-        updateSelectedItem(index);
+        updateSelectedItem(static_cast<int>(index));
 
         // Move the scrollbar
         if (m_selectedItem * getItemHeight() < m_verticalScrollbar->getValue())
diff --git a/src/TGUI/Widgets/TreeView.cpp b/src/TGUI/Widgets/TreeView.cpp
index 04fd5c4e..e5175dd2 100644
--- a/src/TGUI/Widgets/TreeView.cpp
+++ b/src/TGUI/Widgets/TreeView.cpp
@@ -1047,7 +1047,7 @@ namespace tgui
             updateSelectedAndHoveringItemColors();
         }
 
-        m_verticalScrollbar->setMaximum(m_itemHeight * m_visibleNodes.size());
+        m_verticalScrollbar->setMaximum(static_cast<unsigned int>(m_itemHeight * m_visibleNodes.size()));
         m_horizontalScrollbar->setMaximum(static_cast<unsigned int>(m_maxRight));
 
         if ((m_maxRight + m_verticalScrollbar->getSize().x) > (getInnerSize().x - m_paddingCached.getLeft() - m_paddingCached.getRight()))
@@ -1108,7 +1108,7 @@ namespace tgui
             };
 
             int firstNode = 0;
-            int lastNode = m_visibleNodes.size();
+            int lastNode = static_cast<int>(m_visibleNodes.size());
             if (m_verticalScrollbar->getViewportSize() < m_verticalScrollbar->getMaximum())
             {
                 firstNode = static_cast<int>(m_verticalScrollbar->getValue() / m_itemHeight);