diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/CSharpClientCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/CSharpClientCodegen.java
index 294a095c260..69bee7bd9c9 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/CSharpClientCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/CSharpClientCodegen.java
@@ -225,8 +225,8 @@ public class CSharpClientCodegen extends AbstractCSharpCodegen {
             setTargetFrameworkNuget("uwp");
             setSupportsAsync(Boolean.TRUE);
             setSupportsUWP(Boolean.TRUE);
-            additionalProperties.put("supportsAsync", this.supportsUWP);
-            additionalProperties.put("supportsUWP", this.supportsAsync);
+            additionalProperties.put("supportsAsync", this.supportsAsync);
+            additionalProperties.put("supportsUWP", this.supportsUWP);
 
         } else {
             setTargetFrameworkNuget("net45");