diff --git a/astro/Makefile b/astro/Makefile
index 226efe3a164b..ec685299fe30 100644
--- a/astro/Makefile
+++ b/astro/Makefile
@@ -1,4 +1,4 @@
-     MakefCOMMENT = Astronomical ports
+    COMMENT = Astronomical ports
 
     SUBDIR += R-cran-maptools
     SUBDIR += accrete