diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConstants.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConstants.java
index 74464397120..9c2711f8cad 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConstants.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConstants.java
@@ -41,7 +41,7 @@ public class CodegenConstants {
     public static final String SORT_PARAMS_BY_REQUIRED_FLAG_DESC = "Sort method arguments to place required parameters before optional parameters.";
 
     public static final String ENSURE_UNIQUE_PARAMS = "ensureUniqueParams";
-    public static final String ENSURE_UNIQUE_PARAMS_DESC = "Whether to ensure parameter names are unique in an operation (rename parameters that are not). Default: true";
+    public static final String ENSURE_UNIQUE_PARAMS_DESC = "Whether to ensure parameter names are unique in an operation (rename parameters that are not).";
 
     public static final String PACKAGE_NAME = "packageName";
     public static final String PACKAGE_VERSION = "packageVersion";
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
index d0af0316811..53c0e6350b0 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
@@ -448,7 +448,8 @@ public class DefaultCodegen {
 
         cliOptions.add(new CliOption(CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG,
                 CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG_DESC).defaultValue("true"));
-        cliOptions.add(new CliOption(CodegenConstants.ENSURE_UNIQUE_PARAMS, CodegenConstants.ENSURE_UNIQUE_PARAMS_DESC));
+        cliOptions.add(new CliOption(CodegenConstants.ENSURE_UNIQUE_PARAMS, CodegenConstants.ENSURE_UNIQUE_PARAMS_DESC)
+                .defaultValue("true"));
     }
 
     /**