diff --git a/Demo/Demo.xcodeproj/project.pbxproj b/Demo/Demo.xcodeproj/project.pbxproj
index 998109d0..0cd3b576 100755
--- a/Demo/Demo.xcodeproj/project.pbxproj
+++ b/Demo/Demo.xcodeproj/project.pbxproj
@@ -31,7 +31,7 @@
 		1A8B0F00D6903A046FE40BCE /* Pods-Demo.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Demo.debug.xcconfig"; path = "Pods/Target Support Files/Pods-Demo/Pods-Demo.debug.xcconfig"; sourceTree = "<group>"; };
 		306F6BF61D22BCEB00F727A6 /* Repository.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Repository.swift; sourceTree = "<group>"; };
 		306F6BF81D22BCF400F727A6 /* Owner.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Owner.swift; sourceTree = "<group>"; };
-		5EC197E01A1BB16D00F4DFD4 /* 4Demo.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = 4Demo.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		5EC197E01A1BB16D00F4DFD4 /* 44Demo5.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = 44Demo5.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		5EC197E41A1BB16D00F4DFD4 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		5EC197E51A1BB16D00F4DFD4 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		5EC197E71A1BB16D00F4DFD4 /* MoyaViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MoyaViewController.swift; sourceTree = "<group>"; };
@@ -98,7 +98,7 @@
 		5EC197E11A1BB16D00F4DFD4 /* Products */ = {
 			isa = PBXGroup;
 			children = (
-				5EC197E01A1BB16D00F4DFD4 /* 4Demo.app */,
+				5EC197E01A1BB16D00F4DFD4 /* 44Demo5.app */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -154,9 +154,9 @@
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
-		5EC197DF1A1BB16D00F4DFD4 /* 4Demo */ = {
+		5EC197DF1A1BB16D00F4DFD4 /* 44Demo5 */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = 5EC198011A1BB16D00F4DFD4 /* Build configuration list for PBXNativeTarget "4Demo" */;
+			buildConfigurationList = 5EC198011A1BB16D00F4DFD4 /* Build configuration list for PBXNativeTarget "44Demo5" */;
 			buildPhases = (
 				9B2248C62406490041BDC8AD /* [CP] Check Pods Manifest.lock */,
 				5EC197DC1A1BB16D00F4DFD4 /* Sources */,
@@ -169,9 +169,9 @@
 			);
 			dependencies = (
 			);
-			name = 4Demo;
+			name = 44Demo5;
 			productName = Demo;
-			productReference = 5EC197E01A1BB16D00F4DFD4 /* 4Demo.app */;
+			productReference = 5EC197E01A1BB16D00F4DFD4 /* 44Demo5.app */;
 			productType = "com.apple.product-type.application";
 		};
 /* End PBXNativeTarget section */
@@ -205,7 +205,7 @@
 			projectDirPath = "";
 			projectRoot = "";
 			targets = (
-				5EC197DF1A1BB16D00F4DFD4 /* 4Demo */,
+				5EC197DF1A1BB16D00F4DFD4 /* 44Demo5 */,
 			);
 		};
 /* End PBXProject section */
@@ -472,7 +472,7 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		5EC198011A1BB16D00F4DFD4 /* Build configuration list for PBXNativeTarget "4Demo" */ = {
+		5EC198011A1BB16D00F4DFD4 /* Build configuration list for PBXNativeTarget "44Demo5" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				5EC198031A1BB16D00F4DFD4 /* Release */,
diff --git a/Demo/Demo.xcodeproj/xcuserdata/eve21962.xcuserdatad/xcschemes/Demo.xcscheme b/Demo/Demo.xcodeproj/xcuserdata/eve21962.xcuserdatad/xcschemes/Demo.xcscheme
index c8f9577f..ce2a566b 100644
--- a/Demo/Demo.xcodeproj/xcuserdata/eve21962.xcuserdatad/xcschemes/Demo.xcscheme
+++ b/Demo/Demo.xcodeproj/xcuserdata/eve21962.xcuserdatad/xcschemes/Demo.xcscheme
@@ -15,8 +15,8 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "5EC197DF1A1BB16D00F4DFD4"
-               BuildableName = "4Demo.app"
-               BlueprintName = "4Demo"
+               BuildableName = "44Demo5.app"
+               BlueprintName = "44Demo5"
                ReferencedContainer = "container:Demo.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
@@ -34,8 +34,8 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "5EC197DF1A1BB16D00F4DFD4"
-            BuildableName = "4Demo.app"
-            BlueprintName = "4Demo"
+            BuildableName = "44Demo5.app"
+            BlueprintName = "44Demo5"
             ReferencedContainer = "container:Demo.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
@@ -58,8 +58,8 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "5EC197DF1A1BB16D00F4DFD4"
-            BuildableName = "4Demo.app"
-            BlueprintName = "4Demo"
+            BuildableName = "44Demo5.app"
+            BlueprintName = "44Demo5"
             ReferencedContainer = "container:Demo.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
@@ -77,8 +77,8 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "5EC197DF1A1BB16D00F4DFD4"
-            BuildableName = "4Demo.app"
-            BlueprintName = "4Demo"
+            BuildableName = "44Demo5.app"
+            BlueprintName = "44Demo5"
             ReferencedContainer = "container:Demo.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
diff --git a/EVReflection.podspec b/EVReflection.podspec
index 9808dd18..5c66bfec 100755
--- a/EVReflection.podspec
+++ b/EVReflection.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "EVReflection"
-  s.version      = "5.3.0"
+  s.version      = "5.3.1"
   s.summary      = "Reflection based (Dictionary, CKRecord, NSManagedObject, Realm, JSON and XML) object mapping with extensions for Alamofire and Moya with RxSwift or ReactiveSwift"
 
   s.description  = <<-EOS
diff --git a/EVReflection.xcworkspace/xcuserdata/eve21962.xcuserdatad/UserInterfaceState.xcuserstate b/EVReflection.xcworkspace/xcuserdata/eve21962.xcuserdatad/UserInterfaceState.xcuserstate
index 9632000f..f6d80dfd 100644
Binary files a/EVReflection.xcworkspace/xcuserdata/eve21962.xcuserdatad/UserInterfaceState.xcuserstate and b/EVReflection.xcworkspace/xcuserdata/eve21962.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/Source/EVReflection.swift b/Source/EVReflection.swift
index 9f0aa5ac..c80d0841 100755
--- a/Source/EVReflection.swift
+++ b/Source/EVReflection.swift
@@ -591,6 +591,11 @@ final public class EVReflection {
             appName = appName.characters.split(whereSeparator: {$0 == "."}).map({ String($0) }).last ?? ""
         }
         
+        // First character may not be a number
+        if appName.prefix(1) >= "0" && appName.prefix(1) <= "9" {
+            appName = "_" + String(appName.characters.dropFirst())
+        }
+        
         // Clean up special characters
         return appName.components(separatedBy: illegalCharacterSet).joined(separator: "_")
     }
@@ -1089,7 +1094,7 @@ final public class EVReflection {
     }
     
     /// Character that will be replaced by _ from the keys in a dictionary / json
-    fileprivate static let illegalCharacterSet = CharacterSet(charactersIn: " -&%#@!$^*()<>?.,:;1234567890")
+    fileprivate static let illegalCharacterSet = CharacterSet(charactersIn: " -&%#@!$^*()<>?.,:;")
     /// processIllegalCharacters Cache
     fileprivate static var processIllegalCharactersCache = NSCache<NSString, NSString>()