diff --git a/README.md b/README.md
index cb1a37d..b75e894 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![test](https://github.com/key4hep/key4hep-julia-fwk/actions/workflows/test.yml/badge.svg)](https://github.com/key4hep/key4hep-julia-fwk/actions/workflows/test.yml)
 [![Aqua QA](https://raw.githubusercontent.com/JuliaTesting/Aqua.jl/master/badge.svg)](https://github.com/JuliaTesting/Aqua.jl)
 
-Demonstrator project for HEP data-processing framework in Julia
+Demonstrator project for HEP data-processing framework in Julia and based on [Dagger.jl](https://github.com/JuliaParallel/Dagger.jl)
 
 
 ## Getting started
diff --git a/bin/schedule.jl b/bin/schedule.jl
index e314cd0..96401d1 100644
--- a/bin/schedule.jl
+++ b/bin/schedule.jl
@@ -22,7 +22,7 @@ function parse_args()
         "--max-concurrent"
         help = "Number of slots for graphs to be scheduled concurrently"
         arg_type = Int
-        default = 3
+        default = 1
 
         "--dot-trace"
         help = "Output graphviz dot file for execution logs graph"
@@ -65,6 +65,8 @@ end
 
 if abspath(PROGRAM_FILE) == @__FILE__
     main()
-    rmprocs!(Dagger.Sch.eager_context(), workers())
-    rmprocs(workers())
+    if length(workers()) > 1
+        rmprocs!(Dagger.Sch.eager_context(), workers())
+        rmprocs(workers())
+    end
 end