diff --git a/tests/cluster/run.tcl b/tests/cluster/run.tcl
index acb6d49c..fe600b91 100644
--- a/tests/cluster/run.tcl
+++ b/tests/cluster/run.tcl
@@ -6,6 +6,8 @@ cd tests/cluster
 source cluster.tcl
 source ../instances.tcl
 
+set ::instances_count 5 ; # How many instances we use at max.
+
 proc main {} {
     parse_options
     spawn_instance redis $::redis_base_port $::instances_count {
diff --git a/tests/instances.tcl b/tests/instances.tcl
index 7cc798dc..4575c838 100644
--- a/tests/instances.tcl
+++ b/tests/instances.tcl
@@ -22,7 +22,6 @@ set ::sentinel_instances {}
 set ::redis_instances {}
 set ::sentinel_base_port 20000
 set ::redis_base_port 30000
-set ::instances_count 5 ; # How many Sentinels / Instances we use at max
 set ::pids {} ; # We kill everything at exit
 set ::dirs {} ; # We remove all the temp dirs at exit
 set ::run_matching {} ; # If non empty, only tests matching pattern are run.
diff --git a/tests/sentinel/run.tcl b/tests/sentinel/run.tcl
index 78d2f61b..3edde672 100644
--- a/tests/sentinel/run.tcl
+++ b/tests/sentinel/run.tcl
@@ -5,6 +5,8 @@
 cd tests/sentinel
 source ../instances.tcl
 
+set ::instances_count 5 ; # How many instances we use at max.
+
 proc main {} {
     parse_options
     spawn_instance sentinel $::sentinel_base_port $::instances_count