diff --git a/AUTHORS.rst b/AUTHORS.rst
index 17bea2b9..39c485ee 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -78,3 +78,4 @@ Contributors (chronological)
 - Mounier Florian `@paradoxxxzero <https://github.com/paradoxxxzero>`_
 - Renato Damas `@codectl <https://github.com/codectl>`_
 - Tayler Sokalski `@tsokalski <https://github.com/tsokalski>`_
+- Luna Lovegood `@duchuyvp <https://github.com/duchuyvp>`_
\ No newline at end of file
diff --git a/src/apispec/ext/marshmallow/__init__.py b/src/apispec/ext/marshmallow/__init__.py
index 2595581d..6e118099 100644
--- a/src/apispec/ext/marshmallow/__init__.py
+++ b/src/apispec/ext/marshmallow/__init__.py
@@ -89,8 +89,9 @@ def resolver(schema: type[Schema]) -> str:
     schema_cls = resolve_schema_cls(schema)
     name = schema_cls.__name__
     if name.endswith("Schema"):
-        return name[:-6] or name
-    return name
+        name_ = name[:-6] or name
+        return name_.strip()
+    return name.strip()
 
 
 class MarshmallowPlugin(BasePlugin):