diff --git a/src/components/ItemCard.astro b/src/components/ItemCard.astro
index 1bb5f7f..1278cd8 100644
--- a/src/components/ItemCard.astro
+++ b/src/components/ItemCard.astro
@@ -23,7 +23,9 @@ const lang = await getLocales(Astro.cookies.get('language')?.value ?? await getH
             <input type="hidden" name="id" value={Astro.props.id} />
             <div class="item-card-name">{Astro.props.name} | {Astro.props.level}</div>
             <div class="item-card-description">{Astro.props.description} <a href={`/wiki/${Astro.props.category}/${Astro.props.id}`}>[more]</a></div>
-            <input type="submit" class="item-card-build" value={getName(lang, Astro.props.button_type, Astro.props.button_name)} />
+            {Astro.props.button_name === "nav-researched" ?
+            <input type="submit" class="item-card-build" value={getName(lang, Astro.props.button_type, "nav-researched")} disabled /> :
+            <input type="submit" class="item-card-build" value={getName(lang, Astro.props.button_type, "nav-research")} />}
             <div class="item-card-info-button">i</div>
             {Astro.props.has_amount_input === "true" && <input type="number" name="amount" />}
         </form>
diff --git a/src/pages/game/research.astro b/src/pages/game/research.astro
index 1156ea1..ddac587 100644
--- a/src/pages/game/research.astro
+++ b/src/pages/game/research.astro
@@ -59,11 +59,11 @@ for(const research of researchList) {
 				category="research"
 				id={research.id}
 				name={getObj(lang, "research", research.id).name}
-				level={user.research.getResearchById(research.id)?.level.toString() ?? "0"}
+				level={research.onetime === true ? user.research.getResearchById(research.id)?.level === 1 ? "Researched" : "Not researched" : user.research.getResearchById(research.id)?.level.toString() ?? "0"}
 				description={getObj(lang, "research", research.id).description ?? ""}
 				image={`/images/research/${research.id}.jpeg`}
 				button_type="general"
-				button_name="nav-research" />
+				button_name={research.onetime ? user.research.getResearchById(research.id)?.level === 1 ? "nav-researched" : "nav-research" : "nav-research"} />
 		</>)}
 	</div>
 </LoggedIn>
diff --git a/src/types/db/DBResearch.ts b/src/types/db/DBResearch.ts
index 58cde23..83ae4ab 100644
--- a/src/types/db/DBResearch.ts
+++ b/src/types/db/DBResearch.ts
@@ -10,4 +10,5 @@ export default interface DBResearch {
     };
     time: number;
     multiplier: number;
+    onetime?: boolean;
 }
\ No newline at end of file