diff --git a/src/readcommand.f90 b/src/readcommand.f90
index 0fe2b2c06f22712f8266fcdfe7abac08c14a3928..368475c790dd56dc5baa415262ce73880e145985 100644
--- a/src/readcommand.f90
+++ b/src/readcommand.f90
@@ -443,7 +443,7 @@ subroutine readcommand
 
   if ((ipout.ne.0).and.(ipout.ne.1).and.(ipout.ne.2)) then
     write(*,*) ' #### FLEXPART MODEL ERROR! FILE COMMAND:     #### '
-    write(*,*) ' #### IPOUT MUST BE 1, 2 OR 3!                #### '
+    write(*,*) ' #### IPOUT MUST BE 0, 1, or 2!                #### '
     stop
   endif