diff --git a/src/backend/helpers/helpers.cpp b/src/backend/helpers/helpers.cpp
index c8db8c64..ed2af9d6 100644
--- a/src/backend/helpers/helpers.cpp
+++ b/src/backend/helpers/helpers.cpp
@@ -32,7 +32,6 @@
 #include <boost/log/trivial.hpp>
 #include <boost/format.hpp>
 #include <boost/locale.hpp>
-#include <boost/regex.hpp>
 
 #include <cstring>
 #include <iostream>
@@ -57,66 +56,10 @@ namespace loot {
     using namespace std;
     using boost::algorithm::replace_all;
     using boost::algorithm::replace_first;
-    using boost::regex;
-    using boost::regex_match;
-    using boost::regex_search;
     namespace karma = boost::spirit::karma;
     namespace fs = boost::filesystem;
     namespace lc = boost::locale;
 
-    /// REGEX expression definition
-    ///  Each expression is composed of three parts:
-    ///    1. The marker string "version", "ver", "rev", "v" or "r"
-    ///    2. The version string itself.
-
-    const char* regex1 =
-        "^(?:\\bversion\\b[ ]*(?:[:.\\-]?)|\\brevision\\b(?:[:.\\-]?))[ ]*"
-        "((?:alpha|beta|test|debug)?\\s*[-0-9a-zA-Z._+]+\\s*(?:alpha|beta|test|debug)?\\s*(?:[0-9]*))$"
-        ;
-
-    const char* regex2 =
-        "(?:\\bversion\\b(?:[ :]?)|\\brevision\\b(?:[:.\\-]?))[ ]*"
-        "([0-9][-0-9a-zA-Z._]+\\+?)"
-        ;
-
-    const char* regex3 =
-        "(?:\\bver(?:[:.]?)|\\brev(?:[:.]?))\\s*"
-        "([0-9][-0-9a-zA-Z._]*\\+?)"
-        ;
-
-    // Matches "Updated: <date>" for the Bashed patch
-    const char* regex4 =
-        "(?:Updated:)\\s*"
-        "([-0-9aAmMpP/ :]+)$"
-        ;
-
-    // Matches isolated versions as last resort
-    const char* regex5 =
-        "(?:(?:\\bv|\\br)(?:\\s?)(?:[-.:])?(?:\\s*))"
-        "((?:(?:\\balpha\\b)?|(?:\\bbeta\\b)?)\\s*[0-9]+([-._]*(?!esp|esm)[0-9a-zA-Z]+)*\\+?)"
-        ;
-
-    // Matches isolated versions as last resort
-    const char* regex6 =
-        "((?:(?:\\balpha\\b)?|(?:\\bbeta\\b)?)\\s*\\b[0-9][-0-9a-zA-Z._]*\\+?)$"
-        ;
-
-    const char* regex7 =
-        "(^\\bmark\\b\\s*\\b[IVX0-9][-0-9a-zA-Z._+]*\\s*(?:alpha|beta|test|debug)?\\s*(?:[0-9]*)?)$"
-        ;
-
-    /// Array used to try each of the expressions defined above using
-    /// an iteration for each of them.
-    const std::vector<boost::regex> version_checks({
-        regex(regex1, regex::ECMAScript | regex::icase),
-        regex(regex2, regex::ECMAScript | regex::icase),
-        regex(regex3, regex::ECMAScript | regex::icase),
-        regex(regex4, regex::ECMAScript | regex::icase),
-        regex(regex5, regex::ECMAScript | regex::icase),  //This incorrectly identifies "OBSE v19" where 19 is any integer.
-        //regex(regex6, regex::ECMAScript | regex::icase),  //This is responsible for metallicow's false positive.
-        regex(regex7, regex::ECMAScript | regex::icase)
-    });
-
     //////////////////////////////////////////////////////////////////////////
     // Helper functions
     //////////////////////////////////////////////////////////////////////////
diff --git a/src/backend/plugin/plugin.cpp b/src/backend/plugin/plugin.cpp
index 076db2ac..e5cd72dd 100644
--- a/src/backend/plugin/plugin.cpp
+++ b/src/backend/plugin/plugin.cpp
@@ -41,6 +41,59 @@ using boost::regex_search;
 using boost::smatch;
 
 namespace loot {
+    /// REGEX expression definition
+    ///  Each expression is composed of three parts:
+    ///    1. The marker string "version", "ver", "rev", "v" or "r"
+    ///    2. The version string itself.
+
+    const char* regex1 =
+        "^(?:\\bversion\\b[ ]*(?:[:.\\-]?)|\\brevision\\b(?:[:.\\-]?))[ ]*"
+        "((?:alpha|beta|test|debug)?\\s*[-0-9a-zA-Z._+]+\\s*(?:alpha|beta|test|debug)?\\s*(?:[0-9]*))$"
+        ;
+
+    const char* regex2 =
+        "(?:\\bversion\\b(?:[ :]?)|\\brevision\\b(?:[:.\\-]?))[ ]*"
+        "([0-9][-0-9a-zA-Z._]+\\+?)"
+        ;
+
+    const char* regex3 =
+        "(?:\\bver(?:[:.]?)|\\brev(?:[:.]?))\\s*"
+        "([0-9][-0-9a-zA-Z._]*\\+?)"
+        ;
+
+    // Matches "Updated: <date>" for the Bashed patch
+    const char* regex4 =
+        "(?:Updated:)\\s*"
+        "([-0-9aAmMpP/ :]+)$"
+        ;
+
+    // Matches isolated versions as last resort
+    const char* regex5 =
+        "(?:(?:\\bv|\\br)(?:\\s?)(?:[-.:])?(?:\\s*))"
+        "((?:(?:\\balpha\\b)?|(?:\\bbeta\\b)?)\\s*[0-9]+([-._]*(?!esp|esm)[0-9a-zA-Z]+)*\\+?)"
+        ;
+
+    // Matches isolated versions as last resort
+    const char* regex6 =
+        "((?:(?:\\balpha\\b)?|(?:\\bbeta\\b)?)\\s*\\b[0-9][-0-9a-zA-Z._]*\\+?)$"
+        ;
+
+    const char* regex7 =
+        "(^\\bmark\\b\\s*\\b[IVX0-9][-0-9a-zA-Z._+]*\\s*(?:alpha|beta|test|debug)?\\s*(?:[0-9]*)?)$"
+        ;
+
+    /// Array used to try each of the expressions defined above using
+    /// an iteration for each of them.
+    const std::vector<boost::regex> version_checks({
+        regex(regex1, regex::ECMAScript | regex::icase),
+        regex(regex2, regex::ECMAScript | regex::icase),
+        regex(regex3, regex::ECMAScript | regex::icase),
+        regex(regex4, regex::ECMAScript | regex::icase),
+        regex(regex5, regex::ECMAScript | regex::icase),  //This incorrectly identifies "OBSE v19" where 19 is any integer.
+        //regex(regex6, regex::ECMAScript | regex::icase),  //This is responsible for metallicow's false positive.
+        regex(regex7, regex::ECMAScript | regex::icase)
+    });
+
     Plugin::Plugin() : PluginMetadata(), _isEmpty(true), isMaster(false), crc(0), numOverrideRecords(0) {}
 
     Plugin::Plugin(const std::string& n) : PluginMetadata(n), _isEmpty(true), isMaster(false), crc(0), numOverrideRecords(0) {}