diff --git a/src/Markdig/Extensions/Tables/GridTableParser.cs b/src/Markdig/Extensions/Tables/GridTableParser.cs
index 173dc014..0dc268fa 100644
--- a/src/Markdig/Extensions/Tables/GridTableParser.cs
+++ b/src/Markdig/Extensions/Tables/GridTableParser.cs
@@ -256,7 +256,7 @@ private BlockState HandleContents(BlockProcessor processor, GridTableState table
                 {
                     sliceForCell.End = line.Start + columnEnd - 1;
                 }
-                else if (line.PeekCharExtra(line.End) == '|')
+                else if (line.PeekCharExtra(line.End - line.Start) == '|')
                 {
                     sliceForCell.End = line.End - 1;
                 }