diff --git a/src/entity_manager/perform_probe.cpp b/src/entity_manager/perform_probe.cpp
index 24fdd71..20e9d65 100644
--- a/src/entity_manager/perform_probe.cpp
+++ b/src/entity_manager/perform_probe.cpp
@@ -233,7 +233,8 @@
 
 FoundProbeTypeT findProbeType(const std::string& probe)
 {
-    const boost::container::flat_map<const char*, probe_type_codes, CmpStr>
+    static const boost::container::flat_map<const char*, probe_type_codes,
+                                            CmpStr>
         probeTypes{{{"FALSE", probe_type_codes::FALSE_T},
                     {"TRUE", probe_type_codes::TRUE_T},
                     {"AND", probe_type_codes::AND},