diff --git a/include/dbus_monitor.hpp b/include/dbus_monitor.hpp
index 46ef25e..4ecc436 100644
--- a/include/dbus_monitor.hpp
+++ b/include/dbus_monitor.hpp
@@ -173,8 +173,8 @@
 
         // These regexes derived on the rules here:
         // https://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names
-        std::regex validPath("^/([A-Za-z0-9_]+/?)*$");
-        std::regex validInterface(
+        static std::regex validPath("^/([A-Za-z0-9_]+/?)*$");
+        static std::regex validInterface(
             "^[A-Za-z_][A-Za-z0-9_]*(\\.[A-Za-z_][A-Za-z0-9_]*)+$");
 
         for (const auto& thisPath : *paths)
diff --git a/include/dbus_utility.hpp b/include/dbus_utility.hpp
index c863c30..f8e53f4 100644
--- a/include/dbus_utility.hpp
+++ b/include/dbus_utility.hpp
@@ -103,7 +103,7 @@
 
 inline void escapePathForDbus(std::string& path)
 {
-    const std::regex reg("[^A-Za-z0-9_/]");
+    const static std::regex reg("[^A-Za-z0-9_/]");
     std::regex_replace(path.begin(), path.begin(), path.end(), reg, "_");
 }
 
diff --git a/include/openbmc_dbus_rest.hpp b/include/openbmc_dbus_rest.hpp
index 5125764..0fbef04 100644
--- a/include/openbmc_dbus_rest.hpp
+++ b/include/openbmc_dbus_rest.hpp
@@ -101,7 +101,7 @@
 
 inline bool validateFilename(const std::string& filename)
 {
-    std::regex validFilename(R"(^[\w\- ]+(\.?[\w\- ]*)$)");
+    static std::regex validFilename(R"(^[\w\- ]+(\.?[\w\- ]*)$)");
 
     return std::regex_match(filename, validFilename);
 }
@@ -2562,7 +2562,7 @@
             // Filename should be in alphanumeric, dot and underscore
             // Its based on phosphor-debug-collector application
             // dumpfile format
-            std::regex dumpFileRegex("[a-zA-Z0-9\\._]+");
+            static std::regex dumpFileRegex("[a-zA-Z0-9\\._]+");
             if (!std::regex_match(dumpFileName, dumpFileRegex))
             {
                 BMCWEB_LOG_ERROR << "Invalid dump filename " << dumpFileName;
diff --git a/redfish-core/lib/ethernet.hpp b/redfish-core/lib/ethernet.hpp
index 31a379d..330e68e 100644
--- a/redfish-core/lib/ethernet.hpp
+++ b/redfish-core/lib/ethernet.hpp
@@ -949,7 +949,7 @@
     // MUST handle host names of up to 63 characters (RFC 1123)
     // labels cannot start or end with hyphens (RFC 952)
     // labels can start with numbers (RFC 1123)
-    const std::regex pattern(
+    const static std::regex pattern(
         "^[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]{0,61}[a-zA-Z0-9]$");
 
     return std::regex_match(hostname, pattern);
@@ -959,7 +959,7 @@
 {
     // Can have multiple subdomains
     // Top Level Domain's min length is 2 character
-    const std::regex pattern(
+    const static std::regex pattern(
         "^([A-Za-z0-9][a-zA-Z0-9\\-]{1,61}|[a-zA-Z0-9]{1,30}\\.)*[a-zA-Z]{2,}$");
 
     return std::regex_match(domainname, pattern);