--- qsstv/documentation/manual/manual.doxy.orig	2019-04-18 21:02:35 UTC
+++ qsstv/documentation/manual/manual.doxy
@@ -1549,7 +1549,7 @@ EXTERNAL_GROUPS        = YES
 # The PERL_PATH should be the absolute path and name of the perl script
 # interpreter (i.e. the result of `which perl').
 
-PERL_PATH              = /usr/bin/perl
+PERL_PATH              = %%PERL%%
 
 #---------------------------------------------------------------------------
 # Configuration options related to the dot tool