diff --git a/src/qt_gui/game_list_frame.h b/src/qt_gui/game_list_frame.h
index af9ce9280..24bf9b09d 100644
--- a/src/qt_gui/game_list_frame.h
+++ b/src/qt_gui/game_list_frame.h
@@ -44,18 +44,29 @@ public:
 
     int icon_size;
 
+    static float parseAsFloat(const std::string& str, const int& offset) {
+        float num;
+        std::from_chars(str.data(), str.data() + str.size() - offset, num);
+        return num;
+    }
+
+    static float parseSizeMB(const std::string& size) {
+        float num = parseAsFloat(size, 3);
+        return (size[size.size() - 2] == 'G') ? num * 1024 : num;
+    }
+
     static bool CompareStringsAscending(GameInfo a, GameInfo b, int columnIndex) {
         switch (columnIndex) {
         case 1:
             return a.name < b.name;
         case 2:
-            return a.serial < b.serial;
+            return a.serial.substr(4) < b.serial.substr(4);
         case 3:
             return a.region < b.region;
         case 4:
-            return a.fw < b.fw;
+            return parseAsFloat(a.fw, 0) < parseAsFloat(b.fw, 0);
         case 5:
-            return a.size < b.size;
+            return parseSizeMB(b.size) < parseSizeMB(a.size);
         case 6:
             return a.version < b.version;
         case 7:
@@ -70,13 +81,13 @@ public:
         case 1:
             return a.name > b.name;
         case 2:
-            return a.serial > b.serial;
+            return a.serial.substr(4) > b.serial.substr(4);
         case 3:
             return a.region > b.region;
         case 4:
-            return a.fw > b.fw;
+            return parseAsFloat(a.fw, 0) > parseAsFloat(b.fw, 0);
         case 5:
-            return a.size > b.size;
+            return parseSizeMB(b.size) > parseSizeMB(a.size);
         case 6:
             return a.version > b.version;
         case 7: