diff --git a/apps/client/src/shared/components/sidebar/CreateItem.tsx b/apps/client/src/shared/components/sidebar/CreateItem.tsx
index 599cc561..50dba1e4 100644
--- a/apps/client/src/shared/components/sidebar/CreateItem.tsx
+++ b/apps/client/src/shared/components/sidebar/CreateItem.tsx
@@ -4,7 +4,6 @@ import { cn } from '@pinback/design-system/utils';
 interface CreateItemProps {
   onClick: () => void;
 }
-//TODO: onClick 이벤트 추가
 
 export default function CreateItem({ onClick }: CreateItemProps) {
   return (
diff --git a/packages/design-system/src/components/popup/Popup.tsx b/packages/design-system/src/components/popup/Popup.tsx
index c188e95b..ce2266dc 100644
--- a/packages/design-system/src/components/popup/Popup.tsx
+++ b/packages/design-system/src/components/popup/Popup.tsx
@@ -44,7 +44,10 @@ const Popup = ({
             helperText={helperText}
             isError={isError}
             value={inputValue}
-            onChange={(e) => onInputChange?.(e.target.value)}
+            onChange={(e) => onInputChange?.(e.target.value.replace(/\s/g, ''))}
+            onKeyDown={(e) => {
+              if (e.key === ' ') e.preventDefault();
+            }}
             defaultValue={defaultValue}
           />
           {isError && errortext && (