diff --git a/src/snapshot.ts b/src/snapshot.ts
index 685e0fd5..351bbc75 100644
--- a/src/snapshot.ts
+++ b/src/snapshot.ts
@@ -126,7 +126,7 @@ function getAbsoluteSrcsetString(doc: Document, attributeValue: string) {
       }
       return '';
     })
-    .join(',');
+    .join(', ');
 
   return resultingSrcsetString;
 }
diff --git a/test/__snapshots__/integration.ts.snap b/test/__snapshots__/integration.ts.snap
index 1e70a295..7bf95acf 100644
--- a/test/__snapshots__/integration.ts.snap
+++ b/test/__snapshots__/integration.ts.snap
@@ -229,7 +229,7 @@ exports[`[html file]: with-relative-res.html 1`] = `
   <img src=\\"http://localhost:3030/a.jpg\\" alt=\\"\\" srcset=\\"\\" />
   <img src=\\"http://localhost:3030/a.jpg\\" alt=\\"\\" srcset=\\"http://localhost:3030/a.jpg\\" />
   <img src=\\"http://localhost:3030/a.jpg\\" alt=\\"\\" srcset=\\"http://exmple.com/a.jpg\\" />
-  <img src=\\"http://localhost:3030/a.jpg\\" alt=\\"\\" srcset=\\"http://localhost:3030/a.jpg 3x,http://localhost:3030/a.jpg 45x,http://localhost:3030/b.png\\" /></body></html>"
+  <img src=\\"http://localhost:3030/a.jpg\\" alt=\\"\\" srcset=\\"http://localhost:3030/a.jpg 3x, http://localhost:3030/a.jpg 45x, http://localhost:3030/b.png\\" /></body></html>"
 `;
 
 exports[`[html file]: with-script.html 1`] = `