diff --git a/runcomputations.jl b/runcomputations.jl
index 7241c0a..d51c7a8 100644
--- a/runcomputations.jl
+++ b/runcomputations.jl
@@ -44,6 +44,7 @@ groups = merge(groups334, groups344, groups444)
 let GROUP = ARGS[1]
     @assert haskey(groups, GROUP)
     group_name = "log/$(GROUP)_r$(HALFRADIUS)"
+    mkpath(group_name)
     open(joinpath(group_name, "full.log"), "a+") do logfile
         logger = SimpleLogger(logfile)
         global_logger(logger)