diff --git a/dist/index.js b/dist/index.js
index 52812cd..8b86aa8 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -31671,17 +31671,21 @@ const logError = (error) => {
     const [
       ,
       file,
-      startLine,
-      startColumn,
+      startLineString,
+      startColumnString,
       ,
       title
     ] = match;
+    const startLine = Number(startLineString);
     annotation = {
       title,
       file,
-      startLine,
-      startColumn
+      startLine
     };
+    if (startColumnString) {
+      // @ts-ignore
+      annotation.startColumn = Number(startColumnString);
+    }
   }
   core.error(error, annotation);
 };
diff --git a/markdownlint-cli2-action.js b/markdownlint-cli2-action.js
index d1ed98e..83df0ac 100644
--- a/markdownlint-cli2-action.js
+++ b/markdownlint-cli2-action.js
@@ -14,17 +14,21 @@ const logError = (error) => {
     const [
       ,
       file,
-      startLine,
-      startColumn,
+      startLineString,
+      startColumnString,
       ,
       title
     ] = match;
+    const startLine = Number(startLineString);
     annotation = {
       title,
       file,
-      startLine,
-      startColumn
+      startLine
     };
+    if (startColumnString) {
+      // @ts-ignore
+      annotation.startColumn = Number(startColumnString);
+    }
   }
   core.error(error, annotation);
 };