diff --git a/components/fallback/validate.cpp b/components/fallback/validate.cpp
new file mode 100644
index 000000000..24865a039
--- /dev/null
+++ b/components/fallback/validate.cpp
@@ -0,0 +1,28 @@
+#include "validate.hpp"
+
+void Fallback::validate(boost::any& v, std::vector<std::string> const& tokens, FallbackMap*, int)
+{
+    if (v.empty())
+    {
+        v = boost::any(FallbackMap());
+    }
+
+    FallbackMap *map = boost::any_cast<FallbackMap>(&v);
+
+    for (std::vector<std::string>::const_iterator it = tokens.begin(); it != tokens.end(); ++it)
+    {
+        std::string temp = Files::EscapeHashString::processString(*it);
+        int sep = temp.find(",");
+        if (sep < 1 || sep == (int)temp.length() - 1)
+#if (BOOST_VERSION < 104200)
+            throw boost::program_options::validation_error("invalid value");
+#else
+            throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value);
+#endif
+
+        std::string key(temp.substr(0, sep));
+        std::string value(temp.substr(sep + 1));
+
+        map->mMap[key] = value;
+    }
+}
diff --git a/components/fallback/validate.hpp b/components/fallback/validate.hpp
index cef52e462..96690f50a 100644
--- a/components/fallback/validate.hpp
+++ b/components/fallback/validate.hpp
@@ -16,32 +16,7 @@ namespace Fallback
         std::map<std::string, std::string> mMap;
     };
 
-    void validate(boost::any &v, std::vector<std::string> const &tokens, FallbackMap*, int)
-    {
-        if (v.empty())
-        {
-            v = boost::any(FallbackMap());
-        }
-
-        FallbackMap *map = boost::any_cast<FallbackMap>(&v);
-
-        for (std::vector<std::string>::const_iterator it = tokens.begin(); it != tokens.end(); ++it)
-        {
-            std::string temp = Files::EscapeHashString::processString(*it);
-            int sep = temp.find(",");
-            if (sep < 1 || sep == (int)temp.length() - 1)
-#if (BOOST_VERSION < 104200)
-                throw boost::program_options::validation_error("invalid value");
-#else
-                throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value);
-#endif
-
-            std::string key(temp.substr(0, sep));
-            std::string value(temp.substr(sep + 1));
-
-            map->mMap[key] = value;
-        }
-    }
+    void validate(boost::any &v, std::vector<std::string> const &tokens, FallbackMap*, int);
 }
 
 #endif