diff --git a/internal/blueprint/customizations_test.go b/internal/blueprint/customizations_test.go
index 0cbcd9df0..6bc3f8907 100644
--- a/internal/blueprint/customizations_test.go
+++ b/internal/blueprint/customizations_test.go
@@ -285,3 +285,47 @@ func TestGetFilesystems(t *testing.T) {
 
 	assert.ElementsMatch(t, expectedFilesystems, retFilesystems)
 }
+
+func TestGetFilesystemsMinSize(t *testing.T) {
+
+	expectedFilesystems := []FilesystemCustomization{
+		{
+			MinSize:    1024,
+			Mountpoint: "/",
+		},
+		{
+			MinSize:    4096,
+			Mountpoint: "/var",
+		},
+	}
+
+	TestCustomizations := Customizations{
+		Filesystem: expectedFilesystems,
+	}
+
+	retFilesystemsSize := TestCustomizations.GetFilesystemsMinSize()
+
+	assert.EqualValues(t, uint64(5120), retFilesystemsSize)
+}
+
+func TestGetFilesystemsMinSizeNonSectorSize(t *testing.T) {
+
+	expectedFilesystems := []FilesystemCustomization{
+		{
+			MinSize:    1025,
+			Mountpoint: "/",
+		},
+		{
+			MinSize:    4097,
+			Mountpoint: "/var",
+		},
+	}
+
+	TestCustomizations := Customizations{
+		Filesystem: expectedFilesystems,
+	}
+
+	retFilesystemsSize := TestCustomizations.GetFilesystemsMinSize()
+
+	assert.EqualValues(t, uint64(5632), retFilesystemsSize)
+}