diff --git a/pkg/packages.go b/pkg/packages.go
index 98828ae..8f83965 100644
--- a/pkg/packages.go
+++ b/pkg/packages.go
@@ -202,7 +202,7 @@ func checkLegacyNameTaken(legacyName string, pkgName string) (bool, error) {
 func known(deps map[string]deps.Dependency, p string) bool {
 	p = filepath.ToSlash(p)
 	for _, d := range deps {
-		k := d.Name()
+		k := filepath.ToSlash(d.Name())
 		if strings.HasPrefix(p, k) || strings.HasPrefix(k, p) {
 			return true
 		}