diff --git a/src/terminal.c b/src/terminal.c
index 42897bf..5a01658 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -1561,7 +1561,8 @@
 
 			cell2cellattr(&cell, &p[pos.col]);
 
-			if (ga_grow(&ga, MB_MAXBYTES) == OK)
+			// Each character can be up to 6 bytes.
+			if (ga_grow(&ga, VTERM_MAX_CHARS_PER_CELL * 6) == OK)
 			{
 			    int	    i;
 			    int	    c;