diff --git a/api/filesystem/serialize_per_dev_configs.go b/api/filesystem/serialize_per_dev_configs.go
index c9d02ad0d..55881885a 100644
--- a/api/filesystem/serialize_per_dev_configs.go
+++ b/api/filesystem/serialize_per_dev_configs.go
@@ -44,11 +44,10 @@ func deduplicate(dirEntries []DirEntry) []DirEntry {
 
 // FilterDirForPerDevConfigs filers the given dirEntries, returns entries for the given device
 // For given configPath A/B/C, return entries:
-//  1. all entries outside of dir A
-//  2. dir entries A, A/B, A/B/C
-//  3. For filterType file:
+//  1. all entries outside of dir A/B/C
+//  2. For filterType file:
 //     file entries: A/B/C/<deviceName> and A/B/C/<deviceName>.*
-//  4. For filterType dir:
+//  3. For filterType dir:
 //     dir entry:   A/B/C/<deviceName>
 //     all entries: A/B/C/<deviceName>/*
 func FilterDirForPerDevConfigs(dirEntries []DirEntry, deviceName, configPath string, filterType portainer.PerDevConfigsFilterType) []DirEntry {
@@ -66,12 +65,7 @@ func FilterDirForPerDevConfigs(dirEntries []DirEntry, deviceName, configPath str
 func shouldIncludeEntry(dirEntry DirEntry, deviceName, configPath string, filterType portainer.PerDevConfigsFilterType) bool {
 
 	// Include all entries outside of dir A
-	if !isInConfigRootDir(dirEntry, configPath) {
-		return true
-	}
-
-	// Include dir entries A, A/B, A/B/C
-	if isParentDir(dirEntry, configPath) {
+	if !isInConfigDir(dirEntry, configPath) {
 		return true
 	}
 
@@ -90,21 +84,9 @@ func shouldIncludeEntry(dirEntry DirEntry, deviceName, configPath string, filter
 	return false
 }
 
-func isInConfigRootDir(dirEntry DirEntry, configPath string) bool {
-	// get the first element of the configPath
-	rootDir := strings.Split(configPath, string(os.PathSeparator))[0]
-
-	// return true if entry name starts with "A/"
-	return strings.HasPrefix(dirEntry.Name, appendTailSeparator(rootDir))
-}
-
-func isParentDir(dirEntry DirEntry, configPath string) bool {
-	if dirEntry.IsFile {
-		return false
-	}
-
-	// return true for dir entries A, A/B, A/B/C
-	return strings.HasPrefix(appendTailSeparator(configPath), appendTailSeparator(dirEntry.Name))
+func isInConfigDir(dirEntry DirEntry, configPath string) bool {
+	// return true if entry name starts with "A/B"
+	return strings.HasPrefix(dirEntry.Name, appendTailSeparator(configPath))
 }
 
 func shouldIncludeFile(dirEntry DirEntry, deviceName, configPath string) bool {
diff --git a/api/filesystem/serialize_per_dev_configs_test.go b/api/filesystem/serialize_per_dev_configs_test.go
index 6a2a5f33b..55a1a4643 100644
--- a/api/filesystem/serialize_per_dev_configs_test.go
+++ b/api/filesystem/serialize_per_dev_configs_test.go
@@ -90,3 +90,24 @@ func TestMultiFilterDirForPerDevConfigs(t *testing.T) {
 		})
 	}
 }
+
+func TestIsInConfigDir(t *testing.T) {
+	f := func(dirEntry DirEntry, configPath string, expect bool) {
+		t.Helper()
+
+		actual := isInConfigDir(dirEntry, configPath)
+		assert.Equal(t, expect, actual)
+	}
+
+	f(DirEntry{Name: "edge-configs"}, "edge-configs", false)
+	f(DirEntry{Name: "edge-configs_backup"}, "edge-configs", false)
+	f(DirEntry{Name: "edge-configs/standalone-edge-agent-standard"}, "edge-configs", true)
+	f(DirEntry{Name: "parent/edge-configs/"}, "edge-configs", false)
+	f(DirEntry{Name: "edgestacktest"}, "edgestacktest/edge-configs", false)
+	f(DirEntry{Name: "edgestacktest/edgeconfigs-test.yaml"}, "edgestacktest/edge-configs", false)
+	f(DirEntry{Name: "edgestacktest/file1.conf"}, "edgestacktest/edge-configs", false)
+	f(DirEntry{Name: "edgeconfigs-test.yaml"}, "edgestacktest/edge-configs", false)
+	f(DirEntry{Name: "edgestacktest/edge-configs"}, "edgestacktest/edge-configs", false)
+	f(DirEntry{Name: "edgestacktest/edge-configs/standalone-edge-agent-async"}, "edgestacktest/edge-configs", true)
+	f(DirEntry{Name: "edgestacktest/edge-configs/abc.txt"}, "edgestacktest/edge-configs", true)
+}