diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
index cf4b7a5b5c8..bf1d638bc5e 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/FlaskConnexionCodegen.java
@@ -433,6 +433,10 @@ public class FlaskConnexionCodegen extends DefaultCodegen implements CodegenConf
 
     @Override
     public String toParamName(String name) {
+        // don't do name =removeNonNameElementToCamelCase(name); // this breaks connexion, which does not modify param names before sending them
+        if (reservedWords.contains(name)) {
+            return escapeReservedWord(name);
+        }
         // Param name is already sanitized in swagger spec processing
         return name;
     }