diff --git a/zmconfig.pl.in b/zmconfig.pl.in
index 4df79e2e4..53c179260 100755
--- a/zmconfig.pl.in
+++ b/zmconfig.pl.in
@@ -993,7 +993,7 @@ if ( $reprocess )
 				my $opt_type = $option->{type};
 				my $opt_value = $option->{value};
 				my $opt_desc = $option->{description};
-				$data =~ s/^$opt_name\s*=/$opt_name="$opt_value"/mg;
+				$data =~ s/^$opt_name\s*=.*$/$opt_name="$opt_value"/mg;
 			}
 		}
 		else