diff --git a/Source/icon.cpp b/Source/icon.cpp
index ff318305..30bb9bca 100644
--- a/Source/icon.cpp
+++ b/Source/icon.cpp
@@ -259,6 +259,7 @@ void set_icon(CResourceEditor* re, WORD wIconId, IconGroup icon1, IconGroup icon
   for (order_index = 0; order_index < order.size(); order_index++)
   {
     LPBYTE data = new BYTE[order[order_index].size];
+    memset(data, 0, order[order_index].size);
 
     if (order_index < icon1.size())
     {