diff --git a/src/dawntools/prefabtool/PrefabComponentParser.cpp b/src/dawntools/prefabtool/PrefabComponentParser.cpp
index ef626dfc..42824dd1 100644
--- a/src/dawntools/prefabtool/PrefabComponentParser.cpp
+++ b/src/dawntools/prefabtool/PrefabComponentParser.cpp
@@ -3,7 +3,6 @@
 // This software is released under the MIT License.
 // https://opensource.org/licenses/MIT
 
-#pragma once
 #include "PrefabComponentParser.hpp"
 
 using namespace Dawn;
diff --git a/src/dawntools/prefabtool/PrefabRegistry.cpp b/src/dawntools/prefabtool/PrefabRegistry.cpp
index bfd189bf..9473d408 100644
--- a/src/dawntools/prefabtool/PrefabRegistry.cpp
+++ b/src/dawntools/prefabtool/PrefabRegistry.cpp
@@ -64,7 +64,7 @@ struct PrefabComponentParserRuleset PrefabRegistry::getRuleset(std::string type)
 
       // Find each instance of "@optional" when it's used within a comment
       // e.g. // @optional or /* @optional */ in the string data.
-      std::regex regex("^\\s*(?:\\/\\/|\\/\\*){1}\\s*\\@optional\\s*(?:\\*\\/)?\\s*$", std::regex_constants::ECMAScript);
+      std::regex regex("^\\s*(?:\\/\\/|\\/\\*){1}\\s*\\@optional\\s*(?:\\*\\/)?\\s*$", std::regex_constants::ECMAScript | std::regex_constants::multiline);
       std::sregex_iterator it(data.begin(), data.end(), regex);
       std::sregex_iterator end;
       while(it != end) {
@@ -92,7 +92,7 @@ struct PrefabComponentParserRuleset PrefabRegistry::getRuleset(std::string type)
         auto variableString = data.substr(varStart, varLength);
 
         // Now (should) be able to extract the type;
-        std::regex regex2("^\\s*(?:[\\S]+<)?([\\w*:_\\s]+)(?:[\\S]+)? (\\**[\\w]+)\\s*$", std::regex_constants::ECMAScript);
+        std::regex regex2("^\\s*(?:[\\S]+<)?([\\w*:_\\s]+)(?:[\\S]+)? (\\**[\\w]+)\\s*$", std::regex_constants::ECMAScript | std::regex_constants::multiline);
         std::smatch match;
         if(!std::regex_search(variableString, match, regex2)) {
           std::cout << "Failed to extract type and name from variable string! " << variableString << std::endl;