diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java
index 048e22bf28a..34e198c147b 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java
@@ -976,7 +976,7 @@ public class KotlinClientCodegen extends AbstractKotlinCodegen {
                         continue;
                     }
                     // Remove discriminator property from the base class, it is not needed in the generated code
-                    getAllVarProperties(cm).forEach(list -> list.removeIf(var -> var.name == discriminator.getPropertyName()));
+                    getAllVarProperties(cm).forEach(list -> list.removeIf(var -> var.name.equals(discriminator.getPropertyName())));
 
                     for (CodegenDiscriminator.MappedModel mappedModel : discriminator.getMappedModels()) {
                         // Add the mapping name to additionalProperties.disciminatorValue
@@ -989,7 +989,7 @@ public class KotlinClientCodegen extends AbstractKotlinCodegen {
                         }
                         additionalProperties.discriminatorValue = mappedModel.getMappingName();
                         // Remove the discriminator property from the derived class, it is not needed in the generated code
-                        getAllVarProperties(mappedModel.getModel()).forEach(list -> list.removeIf(prop -> prop.name == discriminator.getPropertyName()));
+                        getAllVarProperties(mappedModel.getModel()).forEach(list -> list.removeIf(prop -> prop.name.equals(discriminator.getPropertyName())));
                     }
 
                 }