diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
index 80b4cea7798..5c31c4ae2f6 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
@@ -1088,7 +1088,7 @@ public abstract class AbstractPythonCodegen extends DefaultCodegen implements Co
                 || "float".equals(mapNumberTo)) {
             this.mapNumberTo = mapNumberTo;
         } else {
-            throw new IllegalArgumentException("mapNumberTo value must be Union[StrictFloat, StrictInt], StrictStr or float");
+            throw new IllegalArgumentException("mapNumberTo value must be Union[StrictFloat, StrictInt], StrictFloat or float");
         }
     }