diff --git a/Machines/AtariST/Video.hpp b/Machines/AtariST/Video.hpp
index 4dbaef575..bf5bfbf37 100644
--- a/Machines/AtariST/Video.hpp
+++ b/Machines/AtariST/Video.hpp
@@ -75,7 +75,7 @@ class Video {
 			bool blank = false;
 			bool sync = false;
 		} horizontal_, vertical_;
-		int line_length_ = 512;
+		int line_length_ = 1024;
 
 		int data_latch_position_ = 0;
 		uint16_t data_latch_[4];