diff --git a/src/contractor/contractor.cpp b/src/contractor/contractor.cpp
index 9fc82c967..77f5247d2 100644
--- a/src/contractor/contractor.cpp
+++ b/src/contractor/contractor.cpp
@@ -35,6 +35,9 @@
 #include <memory>
 #include <vector>
 
+#include <boost/assert.hpp>
+
+#include <tbb/task_scheduler_init.h>
 namespace osrm
 {
 namespace contractor
@@ -42,6 +45,9 @@ namespace contractor
 
 int Contractor::Run()
 {
+    tbb::task_scheduler_init init(config.requested_num_threads);
+    BOOST_ASSERT(init.is_active());
+
     if (config.core_factor != 1.0)
     {
         util::Log(logWARNING)
diff --git a/src/customize/customizer.cpp b/src/customize/customizer.cpp
index 78adaef58..d08554d41 100644
--- a/src/customize/customizer.cpp
+++ b/src/customize/customizer.cpp
@@ -18,6 +18,10 @@
 #include "util/log.hpp"
 #include "util/timing_util.hpp"
 
+#include <boost/assert.hpp>
+
+#include <tbb/task_scheduler_init.h>
+
 namespace osrm
 {
 namespace customizer
@@ -115,6 +119,9 @@ std::vector<CellMetric> customizeFilteredMetrics(const MultiLevelEdgeBasedGraph
 
 int Customizer::Run(const CustomizationConfig &config)
 {
+    tbb::task_scheduler_init init(config.requested_num_threads);
+    BOOST_ASSERT(init.is_active());
+
     TIMER_START(loading_data);
 
     partitioner::MultiLevelPartition mlp;
diff --git a/src/extractor/extractor.cpp b/src/extractor/extractor.cpp
index 2abfe8443..b505be38b 100644
--- a/src/extractor/extractor.cpp
+++ b/src/extractor/extractor.cpp
@@ -37,6 +37,7 @@
 
 #include "extractor/tarjan_scc.hpp"
 
+#include <boost/assert.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/filesystem/fstream.hpp>
 #include <boost/iterator/function_input_iterator.hpp>
@@ -193,6 +194,7 @@ int Extractor::run(ScriptingEnvironment &scripting_environment)
     const auto number_of_threads = std::min(recommended_num_threads, config.requested_num_threads);
     tbb::task_scheduler_init init(number_of_threads ? number_of_threads
                                                     : tbb::task_scheduler_init::automatic);
+    BOOST_ASSERT(init.is_active());
 
     guidance::LaneDescriptionMap turn_lane_map;
     std::vector<TurnRestriction> turn_restrictions;
diff --git a/src/partitioner/partitioner.cpp b/src/partitioner/partitioner.cpp
index 1bb478605..acbf3036e 100644
--- a/src/partitioner/partitioner.cpp
+++ b/src/partitioner/partitioner.cpp
@@ -27,6 +27,8 @@
 #include <boost/assert.hpp>
 #include <boost/filesystem/operations.hpp>
 
+#include <tbb/task_scheduler_init.h>
+
 #include "util/geojson_debug_logger.hpp"
 #include "util/geojson_debug_policies.hpp"
 #include "util/json_container.hpp"
@@ -128,6 +130,9 @@ auto getGraphBisection(const PartitionerConfig &config)
 
 int Partitioner::Run(const PartitionerConfig &config)
 {
+    tbb::task_scheduler_init init(config.requested_num_threads);
+    BOOST_ASSERT(init.is_active());
+
     const std::vector<BisectionID> &node_based_partition_ids = getGraphBisection(config);
 
     // Up until now we worked on the compressed node based graph.
diff --git a/src/tools/contract.cpp b/src/tools/contract.cpp
index ee4929c41..258e202f8 100644
--- a/src/tools/contract.cpp
+++ b/src/tools/contract.cpp
@@ -187,8 +187,6 @@ int main(int argc, char *argv[]) try
     util::Log() << "Input file: " << contractor_config.base_path.string() << ".osrm";
     util::Log() << "Threads: " << contractor_config.requested_num_threads;
 
-    tbb::task_scheduler_init init(contractor_config.requested_num_threads);
-
     osrm::contract(contractor_config);
 
     util::DumpSTXXLStats();
diff --git a/src/tools/customize.cpp b/src/tools/customize.cpp
index d074d2166..97217aa95 100644
--- a/src/tools/customize.cpp
+++ b/src/tools/customize.cpp
@@ -166,8 +166,6 @@ int main(int argc, char *argv[]) try
         return EXIT_FAILURE;
     }
 
-    tbb::task_scheduler_init init(customization_config.requested_num_threads);
-
     auto exitcode = customizer::Customizer().Run(customization_config);
 
     util::DumpMemoryStats();
diff --git a/src/tools/partition.cpp b/src/tools/partition.cpp
index 22c202b9d..aeed36360 100644
--- a/src/tools/partition.cpp
+++ b/src/tools/partition.cpp
@@ -10,7 +10,6 @@
 #include <tbb/task_scheduler_init.h>
 
 #include <boost/algorithm/string/join.hpp>
-#include <boost/assert.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/program_options.hpp>
 #include <boost/range/adaptor/transformed.hpp>
@@ -235,8 +234,6 @@ int main(int argc, char *argv[]) try
         return EXIT_FAILURE;
     }
 
-    tbb::task_scheduler_init init(partition_config.requested_num_threads);
-    BOOST_ASSERT(init.is_active());
     util::Log() << "Computing recursive bisection";
 
     TIMER_START(bisect);