diff --git a/README.md b/README.md
index 27f0854e..ce9aa53d 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,7 @@ Application behavior can be changed by configuring the following environment var
      - `recipes` (default)
      - `films` (default)
      - `focal-lengths`
+- `NEXT_PUBLIC_EXHAUSTIVE_SIDEBAR_CATEGORIES = 1` shows all sidebar category content
 - `NEXT_PUBLIC_HIDE_EXIF_DATA = 1` hides EXIF data in photo details and OG images (potentially useful for portfolios, which don't focus on photography)
 - `NEXT_PUBLIC_HIDE_ZOOM_CONTROLS = 1` hides fullscreen photo zoom controls
 - `NEXT_PUBLIC_HIDE_TAKEN_AT_TIME = 1` hides taken at time from photo meta
diff --git a/src/admin/AdminAppConfigurationClient.tsx b/src/admin/AdminAppConfigurationClient.tsx
index e286e57c..437a2baa 100644
--- a/src/admin/AdminAppConfigurationClient.tsx
+++ b/src/admin/AdminAppConfigurationClient.tsx
@@ -73,6 +73,7 @@ export default function AdminAppConfigurationClient({
   // Display
   categoryVisibility,
   hasCategoryVisibility,
+  collapseSidebarCategories,
   showExifInfo,
   showZoomControls,
   showTakenAtTimeHidden,
@@ -520,6 +521,15 @@ export default function AdminAppConfigurationClient({
             (default: {`"${DEFAULT_CATEGORY_KEYS.join(',')}"`}):
             {renderEnvVars(['NEXT_PUBLIC_CATEGORY_VISIBILITY'])}
           </ChecklistRow>
+          <ChecklistRow
+            title="Collapse sidebar categories"
+            status={collapseSidebarCategories}
+            optional
+          >
+            Set environment variable to {'"1"'} to show all sidebar
+            category content
+            {renderEnvVars(['NEXT_PUBLIC_EXHAUSTIVE_SIDEBAR_CATEGORIES'])}
+          </ChecklistRow>
           <ChecklistRow
             title="Show EXIF data"
             status={showExifInfo}
diff --git a/src/app/config.ts b/src/app/config.ts
index 25f16db0..da190c59 100644
--- a/src/app/config.ts
+++ b/src/app/config.ts
@@ -221,7 +221,7 @@ export const SHOW_FILM_SIMULATIONS =
 export const SHOW_FOCAL_LENGTHS =
   CATEGORY_VISIBILITY.includes('focal-lengths');
 export const COLLAPSE_SIDEBAR_CATEGORIES =
-  process.env.NEXT_PUBLIC_EXPAND_SIDEBAR_CATEGORIES !== '1';
+  process.env.NEXT_PUBLIC_EXHAUSTIVE_SIDEBAR_CATEGORIES !== '1';
 export const SHOW_EXIF_DATA =
   process.env.NEXT_PUBLIC_HIDE_EXIF_DATA !== '1';
 export const SHOW_ZOOM_CONTROLS =
@@ -326,6 +326,7 @@ export const APP_CONFIGURATION = {
   hasCategoryVisibility:
     Boolean(process.env.NEXT_PUBLIC_CATEGORY_VISIBILITY),
   categoryVisibility: CATEGORY_VISIBILITY,
+  collapseSidebarCategories: COLLAPSE_SIDEBAR_CATEGORIES,
   showExifInfo: SHOW_EXIF_DATA,
   showZoomControls: SHOW_ZOOM_CONTROLS,
   showTakenAtTimeHidden: SHOW_TAKEN_AT_TIME,