diff --git a/src/default_parameters.jl b/src/default_parameters.jl
index 936f388..85928f9 100644
--- a/src/default_parameters.jl
+++ b/src/default_parameters.jl
@@ -32,9 +32,6 @@ const DefaultParameters = ParamsDict(
     :CallbackFunction => x -> x, # Function to callback to, here just the identity function.
     :CallbackInterval  => -1.0,  # Minimum number of seconds between consecutive callbacks. If <0.0 we never callback (which is the default).
 
-    :RandomizeRngSeed => true, # Randomize the RngSeed value before using any random numbers.
-    :RngSeed        => 1234,   # The specific random seed to set before any random numbers are generated. The seed is randomly selected if RandomizeRngSeed is true, and this parameter is updated with its actual value.
-
     :PopulationSize => 50
 )
 
diff --git a/src/opt_controller.jl b/src/opt_controller.jl
index 7baf92c..8c4d097 100644
--- a/src/opt_controller.jl
+++ b/src/opt_controller.jl
@@ -439,10 +439,11 @@ function update_parameters!(oc::OptController, parameters::Parameters = EMPTY_DI
 end
 
 function init_rng!(parameters::Parameters)
-    if parameters[:RandomizeRngSeed]
-        parameters[:RngSeed] = rand(1:1_000_000)
+    if haskey(parameters, :RandomizeRngSeed)
+        warn("Parameter RandomizeRngSeed is obsolete and no longer have an effect; you need to set the seed yourself before calling into BlackBoxOptim.")
+    elseif haskey(parameters, :RngSeed)
+        warn("Parameter RngSeed is obsolete and no longer have an effect; you need to set the seed yourself before calling into BlackBoxOptim.")
     end
-    Random.seed!(parameters[:RngSeed])
 end
 
 """