diff --git a/src/ui/BalancePanel.cpp b/src/ui/BalancePanel.cpp
index 5e0a0f8..e7b4408 100644
--- a/src/ui/BalancePanel.cpp
+++ b/src/ui/BalancePanel.cpp
@@ -30,7 +30,7 @@ void BalancePanel::Setup()
     boxSizer->Add(lblBalance, flagsLbl);
     boxSizer->Add(lblBalanceAmount, flagsLbl);
 
-    SetSizer(boxSizer);
+    SetSizerAndFit(boxSizer);
 }
 
 void BalancePanel::UpdateStuff()
diff --git a/src/ui/EventPositionPanel.cpp b/src/ui/EventPositionPanel.cpp
index 4edaf92..46edb5e 100644
--- a/src/ui/EventPositionPanel.cpp
+++ b/src/ui/EventPositionPanel.cpp
@@ -39,5 +39,5 @@ void EventPositionPanel::Setup()
     gridSizer->Add(lblTotalTraded, flagsLblRight);
     gridSizer->Add(lblRestingOrders, flagsLblRight);
 
-    SetSizer(gridSizer);
+    SetSizerAndFit(gridSizer);
 }
diff --git a/src/ui/MarketPositionPanel.cpp b/src/ui/MarketPositionPanel.cpp
index 7174d13..f4cfb16 100644
--- a/src/ui/MarketPositionPanel.cpp
+++ b/src/ui/MarketPositionPanel.cpp
@@ -49,5 +49,5 @@ void MarketPositionPanel::Setup()
     gridSizer->Add(lblTotalTraded, flagsLblRight);
     gridSizer->Add(lblRestingOrders, flagsLblRight);
 
-    SetSizer(gridSizer);
+    SetSizerAndFit(gridSizer);
 }
diff --git a/src/ui/PortfolioPanel.cpp b/src/ui/PortfolioPanel.cpp
index 234b4f2..840777a 100644
--- a/src/ui/PortfolioPanel.cpp
+++ b/src/ui/PortfolioPanel.cpp
@@ -32,7 +32,7 @@ void PortfolioPanel::Setup()
     boxSizer->Add(pnlBalance, flagsPnl);
     boxSizer->Add(pnlPositions, flagsPnl);
 
-    SetSizer(boxSizer);
+    SetSizerAndFit(boxSizer);
     SetScrollRate(10, 10);
 }
 
@@ -62,7 +62,7 @@ void PortfolioPanel::UpdateStuff()
                 boxSizer->Add(new MarketPositionPanel(pnlPositions, wxID_ANY, &market), flagsPnl);
             }
 
-            pnlPositions->SetSizer(boxSizer);
+            pnlPositions->SetSizerAndFit(boxSizer);
         }
         catch (std::exception &e)
         {