diff --git a/fairmq/PluginManager.h b/fairmq/PluginManager.h
index 11c5f8482..6c17f84e7 100644
--- a/fairmq/PluginManager.h
+++ b/fairmq/PluginManager.h
@@ -115,7 +115,7 @@ class PluginManager
 
     static const std::string fgkLibPrefix;
     std::vector<boost::filesystem::path> fSearchPaths;
-    static std::vector<boost::dll::shared_library> fgDLLKeepAlive;
+    static std::vector<boost::dll::shared_library> fgDLLKeepAlive; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
     std::map<std::string, std::function<PluginFactory>> fPluginFactories;
     std::unique_ptr<PluginServices> fPluginServices;
     std::map<std::string, std::unique_ptr<Plugin>> fPlugins;
diff --git a/fairmq/Properties.h b/fairmq/Properties.h
index db3b069e3..24b003296 100644
--- a/fairmq/Properties.h
+++ b/fairmq/Properties.h
@@ -65,9 +65,9 @@ class PropertyHelper
         }
     }
 
-    static std::unordered_map<std::type_index, void(*)(const fair::mq::EventManager&, const std::string&, const Property&)> fEventEmitters;
+    static std::unordered_map<std::type_index, void(*)(const fair::mq::EventManager&, const std::string&, const Property&)> fEventEmitters; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
   private:
-    static std::unordered_map<std::type_index, std::function<std::pair<std::string, std::string>(const Property&)>> fTypeInfos;
+    static std::unordered_map<std::type_index, std::function<std::pair<std::string, std::string>(const Property&)>> fTypeInfos; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 };
 
 }
diff --git a/fairmq/States.cxx b/fairmq/States.cxx
index 1f733c468..466e38e36 100644
--- a/fairmq/States.cxx
+++ b/fairmq/States.cxx
@@ -16,7 +16,7 @@ using namespace std;
 namespace fair::mq
 {
 
-array<string, 16> stateNames =
+const array<string, 16> stateNames =
 {
     {
         "UNDEFINED",
@@ -38,7 +38,7 @@ array<string, 16> stateNames =
     }
 };
 
-unordered_map<string, State> states =
+const unordered_map<string, State> states =
 {
     { "UNDEFINED",           State::Undefined },
     { "OK",                  State::Ok },
@@ -58,7 +58,7 @@ unordered_map<string, State> states =
     { "EXITING",             State::Exiting }
 };
 
-array<string, 12> transitionNames =
+const array<string, 12> transitionNames =
 {
     {
         "AUTO",
@@ -76,7 +76,7 @@ array<string, 12> transitionNames =
     }
 };
 
-unordered_map<string, Transition> transitions =
+const unordered_map<string, Transition> transitions =
 {
     { "AUTO",          Transition::Auto },
     { "INIT DEVICE",   Transition::InitDevice },
diff --git a/fairmq/Transports.h b/fairmq/Transports.h
index f47fd220d..b15a38878 100644
--- a/fairmq/Transports.h
+++ b/fairmq/Transports.h
@@ -31,21 +31,21 @@ struct TransportError : std::runtime_error
     using std::runtime_error::runtime_error;
 };
 
-static std::unordered_map<std::string, Transport> TransportTypes{
+static const std::unordered_map<std::string, Transport> TransportTypes{
     {"default", Transport::DEFAULT},
     {"zeromq", Transport::ZMQ},
     {"shmem", Transport::SHM},
     {"ofi", Transport::OFI}
 };
 
-static std::unordered_map<Transport, std::string> TransportNames{
+static const std::unordered_map<Transport, std::string> TransportNames{
     {Transport::DEFAULT, "default"},
     {Transport::ZMQ, "zeromq"},
     {Transport::SHM, "shmem"},
     {Transport::OFI, "ofi"}
 };
 
-inline std::string TransportName(Transport transport) { return TransportNames[transport]; }
+inline std::string TransportName(Transport transport) { return TransportNames.at(transport); }
 
 inline Transport TransportType(const std::string& transport)
 try {
diff --git a/fairmq/shmem/Monitor.cxx b/fairmq/shmem/Monitor.cxx
index f49ec4a22..94bb20cdd 100644
--- a/fairmq/shmem/Monitor.cxx
+++ b/fairmq/shmem/Monitor.cxx
@@ -43,7 +43,7 @@ namespace bipc = ::boost::interprocess;
 
 namespace
 {
-    volatile sig_atomic_t gSignalStatus = 0;
+    volatile sig_atomic_t gSignalStatus = 0; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 }
 
 namespace fair::mq::shmem
diff --git a/fairmq/tools/InstanceLimit.h b/fairmq/tools/InstanceLimit.h
index 5e09e9dfe..47b132f98 100644
--- a/fairmq/tools/InstanceLimit.h
+++ b/fairmq/tools/InstanceLimit.h
@@ -43,11 +43,11 @@ struct InstanceLimiter
         }
     }
 
-    static int fCount;
+    static int fCount; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 };
 
 template<typename Tag, int Max>
-int InstanceLimiter<Tag, Max>::fCount(0);
+int InstanceLimiter<Tag, Max>::fCount(0); // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
 } // namespace fair::mq::tools