diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index 31960d96ef..53097d4230 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -222,63 +222,63 @@ reused in several astronomical applications, such as @code{wsclean},
       (license license:gpl3+))))
 
 (define-public aoflagger
-    (package
-      (name "aoflagger")
-      (version "3.5.0")
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-                (url "https://gitlab.com/aroffringa/aoflagger")
-                (commit (string-append "v" version))))
-         (sha256
-          (base32 "08r36xjw6hf3zc7w6qyk8bm049bzyl264ah0g03shzsci91lp8q9"))
-         (file-name (git-file-name name version))))
-      (build-system cmake-build-system)
-      (arguments
-       (list
-        ;; Tests require external files download from
-        ;; https://www.astron.nl/citt/ci_data/aoflagger/
-        #:tests? #f
-        #:configure-flags
-        #~(list (string-append "-DCASACORE_ROOT_DIR="
-                               #$(this-package-input "casacore")))
-        #:phases
-        #~(modify-phases %standard-phases
-            ;; aocommon and pybind11 are expected to be found as git submodules,
-            ;; link them before build.
-            (add-after 'unpack 'link-submodule-package
-              (lambda _
-                (rmdir "external/aocommon")
-                (symlink #$(this-package-native-input "aocommon")
-                         (string-append (getcwd) "/external/aocommon")))))))
-      (native-inputs
-       (list aocommon
-             boost
-             pkg-config
-             python
-             pybind11))
-      (inputs
-       (list casacore
-             cfitsio
-             fftw
-             gsl
-             gtkmm
-             hdf5
-             libpng
-             libsigc++
-             libxml2
-             lua
-             openblas
-             zlib))
-      (home-page "https://gitlab.com/aroffringa/aoflagger")
-      (synopsis "Astronomical tool that can find and remove radio-frequency interference")
-      (description
-       "AOFlagger is a tool that can find and remove radio-frequency
+  (package
+    (name "aoflagger")
+    (version "3.5.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://gitlab.com/aroffringa/aoflagger")
+              (commit (string-append "v" version))))
+       (sha256
+        (base32 "08r36xjw6hf3zc7w6qyk8bm049bzyl264ah0g03shzsci91lp8q9"))
+       (file-name (git-file-name name version))))
+    (build-system cmake-build-system)
+    (arguments
+     (list
+      ;; Tests require external files download from
+      ;; https://www.astron.nl/citt/ci_data/aoflagger/
+      #:tests? #f
+      #:configure-flags
+      #~(list (string-append "-DCASACORE_ROOT_DIR="
+                             #$(this-package-input "casacore")))
+      #:phases
+      #~(modify-phases %standard-phases
+          ;; aocommon and pybind11 are expected to be found as git submodules,
+          ;; link them before build.
+          (add-after 'unpack 'link-submodule-package
+            (lambda _
+              (rmdir "external/aocommon")
+              (symlink #$(this-package-native-input "aocommon")
+                       (string-append (getcwd) "/external/aocommon")))))))
+    (native-inputs
+     (list aocommon
+           boost
+           pkg-config
+           python
+           pybind11))
+    (inputs
+     (list casacore
+           cfitsio
+           fftw
+           gsl
+           gtkmm
+           hdf5
+           libpng
+           libsigc++
+           libxml2
+           lua
+           openblas
+           zlib))
+    (home-page "https://gitlab.com/aroffringa/aoflagger")
+    (synopsis "Astronomical tool that can find and remove radio-frequency interference")
+    (description
+     "AOFlagger is a tool that can find and remove radio-frequency
 interference (RFI) in radio astronomical observations.  It can make use of Lua
-scripts to make flagging strategies flexible, and the tools are applicable to a
-wide set of telescopes.")
-      (license license:gpl3+)))
+scripts to make flagging strategies flexible, and the tools are applicable to
+a wide set of telescopes.")
+    (license license:gpl3+)))
 
 (define-public astroterm
   (package