diff --git a/gnu/packages/cpp.scm b/gnu/packages/cpp.scm
index 7870184a52..f30da0e043 100644
--- a/gnu/packages/cpp.scm
+++ b/gnu/packages/cpp.scm
@@ -313,7 +313,7 @@ tools (containers, algorithms) used by other QuantStack packages.")
        (list (string-append "-DCMAKE_CXX_FLAGS='-isystem "
                             (assoc-ref %build-inputs "gcc")
                             "/include/c++'"))))
-     (inputs
+    (inputs
      `(("clang" ,clang)
        ("ncurses" ,ncurses)))
     (native-inputs