diff --git a/host/sys.c b/host/sys.c
index a5d3b67..c5d8e4b 100644
--- a/host/sys.c
+++ b/host/sys.c
@@ -110,7 +110,7 @@ int main(int argc, char** argv) {
 	int min_s = base + (min - 2) * cs;
 	int max_s = base + (max - 2) * cs + (cs - 1);
 	int bx = 0x100;
-	int es = 0x70;
+	int es = 0x60;
 
 	char* bs = (char*)&bootsect;
 	char* ptr = bs+0x3E;