diff --git a/resources/scripts/script_editor.as b/resources/scripts/script_editor.as
index d6969edaa8..671ce76461 100644
--- a/resources/scripts/script_editor.as
+++ b/resources/scripts/script_editor.as
@@ -37,6 +37,7 @@ const int BUFFER_MIN_SIZE = 10000;
 const int BUFFER_INCREMENT_SIZE = 2500;
 const color LINKCOLOR = color(0.3, 0.5, 0.9, 1.0);
 ScriptEditorWindow editorWindow;
+const uint FILEINFO_COMPRESSEDSIZE_UNKNOWN = uint(-1);
 
 // Config:
 // -------
@@ -461,7 +462,10 @@ class ScriptEditorWindow
             ImGui::Bullet();
             hovered = hovered || ImGui::IsItemHovered();
             ImGui::SameLine(); ImGui::Text(filename); hovered = hovered || ImGui::IsItemHovered();
-            ImGui::SameLine(); ImGui::TextDisabled("("+formatFloat(float(size)/1000.f, "", 3, 2)+" KB)"); hovered = hovered || ImGui::IsItemHovered();
+            if(size != FILEINFO_COMPRESSEDSIZE_UNKNOWN)
+            {
+                ImGui::SameLine(); ImGui::TextDisabled("("+formatFloat(float(size)/1000.f, "", 3, 2)+" KB)"); hovered = hovered || ImGui::IsItemHovered();
+            }
             ImGui::SameLine();
             if (hovered && (@scriptinfo != null))
             { 
@@ -510,7 +514,10 @@ class ScriptEditorWindow
 
         // if we got here, the name isn't in the list yet. 
         //  Construct a pseudo-FileInfo format so we can use common helper.
-        recentScriptsRecord.fileinfos.insertLast({ {'filename', fnameBuf}, {'compressedSize',-1} } );
+        recentScriptsRecord.fileinfos.insertLast({
+            {'filename', fnameBuf},
+            {'compressedSize',FILEINFO_COMPRESSEDSIZE_UNKNOWN}
+        } );
     }   
 }