diff --git a/Core/UDValidationManager.swift b/Core/UDValidationManager.swift
index a1b8e47..9988edc 100644
--- a/Core/UDValidationManager.swift
+++ b/Core/UDValidationManager.swift
@@ -76,12 +76,16 @@ public class UDValidationManager {
                 errorBlock(.urlError, UDError.urlError.description)
                 return
             }
-            model.urlWithoutPort = url!
+            var urlValue = url!
+            if urlValue.last == "/" && urlValue.count > 2 {
+                urlValue.removeLast()
+            }
+            model.urlWithoutPort = urlValue
             
-            if isExistProtocol(url: url!) {
-                model.url = "\(url!):\(model.port)"
+            if isExistProtocol(url: urlValue) {
+                model.url = "\(urlValue):\(model.port)"
             } else {
-                model.url = "https://" + "\(url!):\(model.port)"
+                model.url = "https://" + "\(urlValue):\(model.port)"
             }
         }
         
@@ -96,31 +100,38 @@ public class UDValidationManager {
             }
         }
         
-        if urlToSendFile != nil {
-            if urlToSendFile != "" {
-                guard urlToSendFile!.udIsValidUrl() else {
+        if let url = urlToSendFile {
+            if url != "" {
+                var urlValue = url
+                guard urlValue.udIsValidUrl() else {
                     errorBlock(.urlToSendFileError, UDError.urlToSendFileError.description)
                     return
                 }
-                if isExistProtocol(url: urlToSendFile!) {
-                    model.urlToSendFile = urlToSendFile!
+                if urlValue.last == "/" && urlValue.count > 2 {
+                    urlValue.removeLast()
+                }
+                if isExistProtocol(url: urlValue) {
+                    model.urlToSendFile = urlValue
                 } else {
-                    model.urlToSendFile = "https://" + urlToSendFile!
+                    model.urlToSendFile = "https://" + urlValue
                 }
             }
         }
         
-        if urlAPI != nil {
-            if urlAPI != "" {
-                var urlAPIValue = urlAPI!
-                if !isExistProtocol(url: urlAPIValue) {
-                    urlAPIValue = "https://" + urlAPIValue
+        if let url = urlAPI {
+            if url != "" {
+                var urlValue = url
+                if !isExistProtocol(url: urlValue) {
+                    urlValue = "https://" + urlValue
                 }
-                guard urlAPIValue.udIsValidUrl() else {
+                guard urlValue.udIsValidUrl() else {
                     errorBlock(.urlAPIError, UDError.urlAPIError.description)
                     return
                 }
-                model.urlAPI = urlAPIValue
+                if urlValue.last == "/" && urlValue.count > 2 {
+                    urlValue.removeLast()
+                }
+                model.urlAPI = urlValue
             }
         }
         
diff --git a/Core/UseDeskSDKHelp.swift b/Core/UseDeskSDKHelp.swift
index 8b470a4..9216917 100755
--- a/Core/UseDeskSDKHelp.swift
+++ b/Core/UseDeskSDKHelp.swift
@@ -10,7 +10,7 @@ class UseDeskSDKHelp {
         let payload: [String : Any] = [
             "sdk" : "iOS",
             "type" : "sdk",
-            "version" : "3.4.4",
+            "version" : "3.4.5",
             "message_limit" : countMessagesOnInit,
             "userData" : getUserParameters()
         ] 
diff --git a/Example/UseDesk.xcodeproj/project.pbxproj b/Example/UseDesk.xcodeproj/project.pbxproj
index c81d01a..d43b838 100644
--- a/Example/UseDesk.xcodeproj/project.pbxproj
+++ b/Example/UseDesk.xcodeproj/project.pbxproj
@@ -589,7 +589,7 @@
 				INFOPLIST_FILE = "UseDesk/UseDesk-Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				MARKETING_VERSION = 3.4.4;
+				MARKETING_VERSION = 3.4.5;
 				MODULE_NAME = ExampleApp;
 				ONLY_ACTIVE_ARCH = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = UseDeskExampleSDK.ru;
@@ -622,7 +622,7 @@
 				INFOPLIST_FILE = "UseDesk/UseDesk-Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				MARKETING_VERSION = 3.4.4;
+				MARKETING_VERSION = 3.4.5;
 				MODULE_NAME = ExampleApp;
 				ONLY_ACTIVE_ARCH = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = UseDeskExampleSDK.ru;
diff --git a/UseDesk_SDK_Swift.podspec b/UseDesk_SDK_Swift.podspec
index 53bd65f..06d573b 100755
--- a/UseDesk_SDK_Swift.podspec
+++ b/UseDesk_SDK_Swift.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
 	s.name             = 'UseDesk_SDK_Swift'
-	s.version          = '3.4.4'
+	s.version          = '3.4.5'
 	s.summary          = 'A short description of UseDesk.'
 
 	s.homepage         = 'https://github.com/usedesk/UseDeskSwift'