diff --git a/src/components/organisms/GanttChart.tsx b/src/components/organisms/GanttChart.tsx
index 1e7319b5..e1acc5a8 100644
--- a/src/components/organisms/GanttChart.tsx
+++ b/src/components/organisms/GanttChart.tsx
@@ -73,7 +73,7 @@ const GanttChart = ({
               Week {weekNumber}
             </Box>
           )
-        }, weeksToRender + 1)}
+        }, weeksToRender)}
       </Flex>
       <Box
         sx={{