diff --git a/setup.py b/setup.py
index d7bb59b483afa0674989d2a417613d989360060e..6d65206611e89d7671bd91df962c24668e3848ce 100644
--- a/setup.py
+++ b/setup.py
@@ -30,13 +30,12 @@ setup(
             'mseedpeek=mseedpeek.mseedpeek:main',
         ],
     },
-    install_requires=['pyside2'],
+    install_requires=['PySide2'],
     setup_requires=[],
     extras_require={
         'dev': [
             'flake8',
             'tox',
-            'pyside2',
         ]
     },
     license="GNU General Public License v3",