diff --git a/source/NTSC.cpp b/source/NTSC.cpp
index 1544247e..433d9169 100644
--- a/source/NTSC.cpp
+++ b/source/NTSC.cpp
@@ -442,7 +442,6 @@ inline void updateVideoHorzEOL()
 {
 	if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz)
 	{
-		g_nVideoClockHorz = 0;
 		if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
 		{
 			//VIDEO_DRAW_ENDLINE();
@@ -466,6 +465,8 @@ inline void updateVideoHorzEOL()
 			}
 		}
 
+		g_nVideoClockHorz = 0;
+
 		if (++g_nVideoClockVert == VIDEO_SCANNER_MAX_VERT)
 		{
 			g_nVideoClockVert = 0;