diff --git a/Source/Core/Core/HW/VideoInterface.cpp b/Source/Core/Core/HW/VideoInterface.cpp
index 9af6f9f46a..d87480ff02 100644
--- a/Source/Core/Core/HW/VideoInterface.cpp
+++ b/Source/Core/Core/HW/VideoInterface.cpp
@@ -666,7 +666,9 @@ static void LogField(FieldType field, u32 xfb_address)
 static void BeginField(FieldType field, u64 ticks)
 {
   // Could we fit a second line of data in the stride?
+  // (Datel's Wii FreeLoaders are the only titles known to set WPL to 0)
   bool potentially_interlaced_xfb =
+      m_PictureConfiguration.WPL != 0 &&
       ((m_PictureConfiguration.STD / m_PictureConfiguration.WPL) == 2);
   // Are there an odd number of half-lines per field (definition of interlaced video)
   bool interlaced_video_mode = (GetHalfLinesPerEvenField() & 1) == 1;