diff --git a/quartz/util/path.test.ts b/quartz/util/path.test.ts
index 6a8aa3d1d..7e9c4c84a 100644
--- a/quartz/util/path.test.ts
+++ b/quartz/util/path.test.ts
@@ -106,8 +106,9 @@ describe("transforms", () => {
         ["test.mp4", "test.mp4"],
         ["note with spaces.md", "note-with-spaces"],
         ["notes.with.dots.md", "notes.with.dots"],
-        ["test/special chars?.md", "test/special-chars-q"],
+        ["test/special chars?.md", "test/special-chars"],
         ["test/special chars #3.md", "test/special-chars-3"],
+        ["cool/what about r&d?.md", "cool/what-about-r-and-d"],
       ],
       path.slugifyFilePath,
       path.isFilePath,
diff --git a/quartz/util/path.ts b/quartz/util/path.ts
index 07f25a59d..5cd79ba5f 100644
--- a/quartz/util/path.ts
+++ b/quartz/util/path.ts
@@ -51,7 +51,12 @@ function sluggify(s: string): string {
   return s
     .split("/")
     .map((segment) =>
-      segment.replace(/\s/g, "-").replace(/%/g, "-percent").replace(/\?/g, "-q").replace(/#/g, ""),
+      segment
+        .replace(/\s/g, "-")
+        .replace(/&/g, "-and-")
+        .replace(/%/g, "-percent")
+        .replace(/\?/g, "")
+        .replace(/#/g, ""),
     )
     .join("/") // always use / as sep
     .replace(/\/$/, "")