diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Rust2Codegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Rust2Codegen.java
index 4dcfc0d2f87..d3f3ca391c4 100755
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Rust2Codegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Rust2Codegen.java
@@ -312,7 +312,8 @@ else if (name.matches("^\\d.*")) {
 
     @Override
     public String toParamName(String name) {
-        return underscore(super.toParamName(name));
+        // should be the same as variable name (stolen from RubyClientCodegen)
+        return toVarName(name);
     }
 
     @Override