diff --git a/docs/1970s/1971/index.md b/docs/1970s/1971/index.md
index 21781ed..1132c7a 100644
--- a/docs/1970s/1971/index.md
+++ b/docs/1970s/1971/index.md
@@ -1,7 +1,7 @@
 ---
 keywords: [1970s, 1971]
 image: ./1971.webp
-description: "There were two operating system of our interest which was released in the year 1971. They were:"
+description: "There were two operating system of our interest which were released in the year 1971. They were:"
 sidebar_position: 3
 ---
 
@@ -11,6 +11,6 @@ import DocCardList from '@theme/DocCardList';
 
 ![! Unix v1 from 1971](./1971.webp)
 
-There were two operating system of our interest which was released in the year 1971. They were:
+There were two operating system of our interest which were released in the year 1971. They were:
 
 <DocCardList />
diff --git a/docs/1970s/1973/index.md b/docs/1970s/1973/index.md
index d93811b..9cbb33c 100644
--- a/docs/1970s/1973/index.md
+++ b/docs/1970s/1973/index.md
@@ -1,7 +1,7 @@
 ---
 keywords: [1970s, 1973]
 image: ./1973.webp
-description: "There were two operating system of our interest which was released in the year 1973. They were:"
+description: "There were two operating system of our interest which were released in the year 1973. They were:"
 sidebar_position: 4
 ---
 
@@ -11,6 +11,6 @@ import DocCardList from '@theme/DocCardList';
 
 ![! Alto OS Draw from 1973](./1973.webp)
 
-There were two operating system of our interest which was released in the year 1973. They were:
+There were two operating system of our interest which were released in the year 1973. They were:
 
 <DocCardList />