diff --git a/src/components/MarkdownLayout/NavBar.tsx b/src/components/MarkdownLayout/NavBar.tsx
index 89b4a1c6ef..579366f1d4 100644
--- a/src/components/MarkdownLayout/NavBar.tsx
+++ b/src/components/MarkdownLayout/NavBar.tsx
@@ -24,12 +24,8 @@ const NavBar = ({ alignNavButtonsRight = true }) => {
   const moduleIdx = React.useMemo(
     () => sortedModuleLinks?.findIndex(x => x.id === markdownLayoutInfo.id),
     [markdownLayoutInfo, sortedModuleLinks]
-  );
-  if (
-    !sortedModuleLinks ||
-    !moduleIdx ||
-    markdownLayoutInfo instanceof SolutionInfo
-  ) {
+  ) as number;
+  if (!sortedModuleLinks || markdownLayoutInfo instanceof SolutionInfo) {
     return null;
   }
   const prevModule = moduleIdx === 0 ? null : sortedModuleLinks[moduleIdx - 1];