diff --git a/Source/Core/Core/HW/VideoInterface.cpp b/Source/Core/Core/HW/VideoInterface.cpp
index 93075d316c..a191bd25f3 100644
--- a/Source/Core/Core/HW/VideoInterface.cpp
+++ b/Source/Core/Core/HW/VideoInterface.cpp
@@ -634,7 +634,11 @@ u32 GetTicksPerField()
 
 static void BeginField(FieldType field)
 {
-	bool interlaced_xfb = ((m_PictureConfiguration.STD / m_PictureConfiguration.WPL)==2);
+	// Could we fit a second line of data in the stride?
+	bool potentially_interlaced_xfb = ((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;
+
 	u32 fbStride = m_PictureConfiguration.STD * 16;
 	u32 fbWidth = m_PictureConfiguration.WPL * 16;
 	u32 fbHeight = m_VerticalTimingRegister.ACV;
@@ -650,7 +654,7 @@ static void BeginField(FieldType field)
 		xfbAddr = GetXFBAddressTop();
 	}
 
-	if (interlaced_xfb && g_ActiveConfig.bForceProgressive)
+	if (potentially_interlaced_xfb && interlaced_video_mode && g_ActiveConfig.bForceProgressive)
 	{
 		// Strictly speaking, in interlaced mode, we're only supposed to read
 		// half of the lines of the XFB, and use that to display a field; the