diff --git a/doc/orgmode/chapters/using.org b/doc/orgmode/chapters/using.org
index 52e397a281fd3dba78f2bd4f2d59266af587ba9c..b70be3b0e674edd787670d36731179ebb69c17d9 100644
--- a/doc/orgmode/chapters/using.org
+++ b/doc/orgmode/chapters/using.org
@@ -87,7 +87,7 @@
 
     Compilation example:
     #+begin_src
-    gfortran -o main.o -c main.c
+    gfortran -o main.o -c main.f90
     #+end_src
 
     Static linking example: