diff --git a/resources/page/permalinks.go b/resources/page/permalinks.go
index 953f4a2e8..f8cbcd62c 100644
--- a/resources/page/permalinks.go
+++ b/resources/page/permalinks.go
@@ -311,7 +311,7 @@ func (l PermalinkExpander) pageToPermalinkSections(p Page, _ string) (string, er
 
 // pageToPermalinkContentBaseName returns the URL-safe form of the content base name.
 func (l PermalinkExpander) pageToPermalinkContentBaseName(p Page, _ string) (string, error) {
-	return l.urlize(p.PathInfo().BaseNameNoIdentifier()), nil
+	return l.urlize(p.PathInfo().Unnormalized().BaseNameNoIdentifier()), nil
 }
 
 // pageToPermalinkSlugOrContentBaseName returns the URL-safe form of the slug, content base name.
diff --git a/resources/page/permalinks_integration_test.go b/resources/page/permalinks_integration_test.go
index 6ef450edd..c865e2704 100644
--- a/resources/page/permalinks_integration_test.go
+++ b/resources/page/permalinks_integration_test.go
@@ -14,6 +14,7 @@
 package page_test
 
 import (
+	"strings"
 	"testing"
 
 	"github.com/bep/logg"
@@ -343,3 +344,29 @@ slug: "c2slug"
 	b.AssertFileContent("public/myc/c1/index.html", "C1|/myc/c1/|term|")
 	b.AssertFileContent("public/myc/c2slug/index.html", "C2|/myc/c2slug/|term|")
 }
+
+func TestIssue13755(t *testing.T) {
+	t.Parallel()
+
+	files := `
+-- hugo.toml --
+disableKinds = ['home','rss','section','sitemap','taxonomy','term']
+disablePathToLower = false
+[permalinks.page]
+s1 = "/:contentbasename"
+-- content/s1/aBc.md --
+---
+title: aBc
+---
+-- layouts/all.html --
+{{ .Title }}
+`
+
+	b := hugolib.Test(t, files)
+	b.AssertFileExists("public/abc/index.html", true)
+
+	files = strings.ReplaceAll(files, "disablePathToLower = false", "disablePathToLower = true")
+
+	b = hugolib.Test(t, files)
+	b.AssertFileExists("public/aBc/index.html", true)
+}