diff --git a/pkg/skills/installer.go b/pkg/skills/installer.go
index d4ca2ac15..c46dd9f53 100644
--- a/pkg/skills/installer.go
+++ b/pkg/skills/installer.go
@@ -187,6 +187,9 @@ func matchesGitHubWebBase(repoURL *url.URL, webBaseURL string) bool {
 	if err != nil {
 		return false
 	}
+	if !strings.EqualFold(repoURL.Scheme, baseURL.Scheme) {
+		return false
+	}
 	if !strings.EqualFold(repoURL.Host, baseURL.Host) {
 		return false
 	}
diff --git a/pkg/skills/installer_test.go b/pkg/skills/installer_test.go
index 83e241e5f..981b61302 100644
--- a/pkg/skills/installer_test.go
+++ b/pkg/skills/installer_test.go
@@ -200,6 +200,18 @@ func TestParseGitHubRefWithBaseURL(t *testing.T) {
 	if !strings.Contains(err.Error(), `invalid GitHub URL host "gitlab.example.com"`) {
 		t.Fatalf("unexpected error = %v", err)
 	}
+
+	_, err = parseGitHubRefWithBaseURL(
+		"http://ghe.example.com/git/org/repo/tree/dev/skills/test",
+		"https://ghe.example.com/git",
+		"main",
+	)
+	if err == nil {
+		t.Fatal("parseGitHubRefWithBaseURL() error = nil, want invalid host error for scheme mismatch")
+	}
+	if !strings.Contains(err.Error(), `invalid GitHub URL host "ghe.example.com"`) {
+		t.Fatalf("unexpected scheme mismatch error = %v", err)
+	}
 }
 
 func TestSkillInstallerResolveGitHubRefUsesDefaultBranch(t *testing.T) {