diff --git a/src/main/kotlin/com/aitrainer/api/controller/CustomerController.kt b/src/main/kotlin/com/aitrainer/api/controller/CustomerController.kt
index 9ab807b..78e9ada 100644
--- a/src/main/kotlin/com/aitrainer/api/controller/CustomerController.kt
+++ b/src/main/kotlin/com/aitrainer/api/controller/CustomerController.kt
@@ -9,6 +9,7 @@ import org.springframework.http.HttpHeaders
 import org.springframework.http.ResponseEntity
 import org.springframework.security.access.annotation.Secured
 import org.springframework.web.bind.annotation.*
+import java.util.*
 import javax.validation.Valid
 
 
@@ -44,19 +45,59 @@ class CustomerController ( private val customerRepository: CustomerRepository )
             customerRepository.findByActive(active)
 
     @Secured
-    @PutMapping("/customers/{id}")
+    @PostMapping("/customers/{id}")
     fun updateCustomerById(@PathVariable(value = "id") customerId: Long,
                            @Valid @RequestBody newCustomer: Customer,
                            @RequestHeader headers: HttpHeaders): ResponseEntity<Customer> {
 
-        return customerRepository.findById(customerId).map { existingCustomer ->
+        val returnCustomer: Customer = customerRepository.findById(customerId).orElse(null)
+                ?: return ResponseEntity.notFound().build()
+
+        val password: String? = newCustomer.password
+        val updatedCustomer: Customer
+        if ( password == null || password.isEmpty() ) {
+            updatedCustomer =
+            returnCustomer.copy(
+                    name = newCustomer.name,
+                    firstname = newCustomer.firstname,
+                    sex = newCustomer.sex,
+                    birthYear = newCustomer.birthYear,
+                    fitnessLevel = newCustomer.fitnessLevel,
+                    bodyType = newCustomer.bodyType,
+                    goal = newCustomer.goal,
+                    weight = newCustomer.weight
+            )
+        } else {
+            updatedCustomer =
+            returnCustomer.copy(
+                    name = newCustomer.name,
+                    firstname = newCustomer.firstname,
+                    password = newCustomer.password,
+                    sex = newCustomer.sex,
+                    birthYear = newCustomer.birthYear,
+                    fitnessLevel = newCustomer.fitnessLevel,
+                    bodyType = newCustomer.bodyType,
+                    goal = newCustomer.goal,
+                    weight = newCustomer.weight
+            )
+        }
+
+        return ResponseEntity.ok().body(customerRepository.save(updatedCustomer))
+
+        /* return customerRepository.findById(customerId).map {
+            existingCustomer ->
             val updatedCustomer: Customer = existingCustomer
                     .copy(name = newCustomer.name, 
                         firstname = newCustomer.firstname,
                         sex = newCustomer.sex,
-                        age = newCustomer.age)
+                        birthYear = newCustomer.birthYear,
+                        fitnessLevel = newCustomer.fitnessLevel,
+                        bodyType = newCustomer.bodyType,
+                        goal = newCustomer.goal,
+                        weight = newCustomer.weight
+                        )
             ResponseEntity.ok().body(customerRepository.save(updatedCustomer))
-        }.orElse(ResponseEntity.notFound().build())
+        }.orElse(ResponseEntity.notFound().build()) */
     }
 
 
diff --git a/src/test/kotlin/com/aitrainer/api/test/CustomerTests.kt b/src/test/kotlin/com/aitrainer/api/test/CustomerTests.kt
index ae53ccd..89f1e1d 100644
--- a/src/test/kotlin/com/aitrainer/api/test/CustomerTests.kt
+++ b/src/test/kotlin/com/aitrainer/api/test/CustomerTests.kt
@@ -10,6 +10,7 @@ import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpHeaders
 import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity
 import kotlin.test.assertEquals
@@ -69,7 +70,7 @@ class CustomerTests {
 
     @Test
     fun testUpdateCustomer() {
-        var id:Long = 90
+        val id:Long = 90
 
         val customer: Customer = customerRepository.findById( id ).orElse(null)
 
@@ -91,6 +92,44 @@ class CustomerTests {
         assertEquals(updatedCustomer.fitnessLevel, "advanced")
     }
 
+    @Test
+    fun testUpdateCustomer2() {
+        var id: Long = 90
+
+        // update no password
+        val customer = Customer()
+
+        customer.customerId = id
+        customer.firstname = "Tib"
+        customer.name = "Bossi"
+        customer.admin = 1
+        customer.sex = "m"
+        customer.fitnessLevel = "intermediate"
+        customer.weight = 79
+        customer.birthYear = 1972
+
+        val customerController = CustomerController(customerRepository)
+        var response: ResponseEntity<*> = customerController.updateCustomerById(id, customer, HttpHeaders.readOnlyHttpHeaders(HttpHeaders.EMPTY) )
+        var newCustomer: Customer? = response.body as Customer
+        assertEquals(response.statusCode, HttpStatus.OK)
+        assertEquals(newCustomer?.weight, 79)
+
+        // test not found
+        id = 1000
+        response = customerController.updateCustomerById(id, customer, HttpHeaders.readOnlyHttpHeaders(HttpHeaders.EMPTY) )
+        assertEquals(response.statusCode, HttpStatus.NOT_FOUND)
+
+
+        // update Password
+        id = 90
+        customer.password = "blabal"
+        response = customerController.updateCustomerById(id, customer, HttpHeaders.readOnlyHttpHeaders(HttpHeaders.EMPTY) )
+        assertEquals(response.statusCode, HttpStatus.OK)
+        newCustomer = response.body as Customer
+        assertEquals(newCustomer.password, "blabal")
+
+    }
+
     @Test
     fun testRegistration() {
         val json = "{\"username\":\"bosi@example.com\",\"password\":\"94385\"}"