diff --git a/packages/toolpad-core/src/DashboardLayout/DashboardSidebarSubNavigation.tsx b/packages/toolpad-core/src/DashboardLayout/DashboardSidebarSubNavigation.tsx
index bb033205131..003ec5ac4aa 100644
--- a/packages/toolpad-core/src/DashboardLayout/DashboardSidebarSubNavigation.tsx
+++ b/packages/toolpad-core/src/DashboardLayout/DashboardSidebarSubNavigation.tsx
@@ -233,9 +233,6 @@ function DashboardSidebarSubNavigation({
                 sx={{
                   whiteSpace: 'nowrap',
                   zIndex: 1,
-                  '& .MuiTypography-root': {
-                    fontWeight: '500',
-                  },
                 }}
               />
               {navigationItem.action && !isMini && isFullyExpanded ? navigationItem.action : null}