diff --git a/data/flatpak-manifest.schema.json b/data/flatpak-manifest.schema.json
index 3e958f49..a20c35a4 100644
--- a/data/flatpak-manifest.schema.json
+++ b/data/flatpak-manifest.schema.json
@@ -999,18 +999,18 @@
       }
     },
     "inherit-extensions": {
-      "description": "Inherit these extra extensions points from the base application or sdk when finishing the build.",
+      "description": "Inherit these extra extension points from the base application or sdk when finishing the build.",
       "type": "array",
       "items": {
-        "description": "Inherit this extra extensions point from the base application or sdk when finishing the build.",
+        "description": "Inherit this extra extension point from the base application or sdk when finishing the build.",
         "type": "string"
       }
     },
     "inherit-sdk-extensions": {
-      "description": "Inherit these extra extensions points from the base application or sdk when finishing the build, but do not inherit them into the platform.",
+      "description": "Inherit these extra extension points from the base application or sdk when finishing the build, but do not inherit them into the platform.",
       "type": "array",
       "items": {
-        "description": "Inherit this extra extensions point from the base application or sdk when finishing the build, but do not inherit them into the platform.",
+        "description": "Inherit this extra extension point from the base application or sdk when finishing the build, but do not inherit into the platform.",
         "type": "string"
       }
     },
diff --git a/doc/flatpak-manifest.xml b/doc/flatpak-manifest.xml
index adec9cb6..30bf7a22 100644
--- a/doc/flatpak-manifest.xml
+++ b/doc/flatpak-manifest.xml
@@ -196,12 +196,12 @@
                 </varlistentry>
                 <varlistentry>
                     <term><option>inherit-extensions</option> (array of strings)</term>
-                    <listitem><para>Inherit these extra extensions points from the base application or sdk when
+                    <listitem><para>Inherit these extra extension points from the base application or sdk when
                     finishing the build.</para></listitem>
                 </varlistentry>
                 <varlistentry>
                     <term><option>inherit-sdk-extensions</option> (array of strings)</term>
-                    <listitem><para>Inherit these extra extensions points from the base application or sdk when
+                    <listitem><para>Inherit these extra extension points from the base application or sdk when
                     finishing the build, but do not inherit them into the platform.</para></listitem>
                 </varlistentry>