diff --git a/pyproject.toml b/pyproject.toml
index 0c78ca920..f57cff804 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,8 +8,8 @@ description = "EELS and EDS analysis with the HyperSpy framework"
 requires-python = ">=3.8"
 readme = "README.md"
 keywords=[
-    "python"
-    "hyperspy"
+    "python",
+    "hyperspy",
     "data analysis",
     "microscopy",
     "electron microscopy",