diff --git a/apps/openmw/main.cpp b/apps/openmw/main.cpp
index 0c46903c9..a860438ce 100644
--- a/apps/openmw/main.cpp
+++ b/apps/openmw/main.cpp
@@ -67,7 +67,7 @@ bool parseOptions (int argc, char** argv, OMW::Engine& engine, Files::Configurat
             "set local data directory (highest priority)")
 
         ("fallback-archive", bpo::value<Files::EscapeStringVector>()->default_value(Files::EscapeStringVector(), "fallback-archive")
-            ->multitoken(), "set fallback BSA archives (later archives have higher priority)")
+            ->multitoken()->composing(), "set fallback BSA archives (later archives have higher priority)")
 
         ("resources", bpo::value<Files::EscapeHashString>()->default_value("resources"),
             "set resources directory")
@@ -76,7 +76,7 @@ bool parseOptions (int argc, char** argv, OMW::Engine& engine, Files::Configurat
             "set initial cell")
 
         ("content", bpo::value<Files::EscapeStringVector>()->default_value(Files::EscapeStringVector(), "")
-            ->multitoken(), "content file(s): esm/esp, or omwgame/omwaddon")
+            ->multitoken()->composing(), "content file(s): esm/esp, or omwgame/omwaddon")
 
         ("no-sound", bpo::value<bool>()->implicit_value(true)
             ->default_value(false), "disable all sounds")
@@ -101,7 +101,7 @@ bool parseOptions (int argc, char** argv, OMW::Engine& engine, Files::Configurat
             "\t2 - treat warnings as errors")
 
         ("script-blacklist", bpo::value<Files::EscapeStringVector>()->default_value(Files::EscapeStringVector(), "")
-            ->multitoken(), "ignore the specified script (if the use of the blacklist is enabled)")
+            ->multitoken()->composing(), "ignore the specified script (if the use of the blacklist is enabled)")
 
         ("script-blacklist-use", bpo::value<bool>()->implicit_value(true)
             ->default_value(true), "enable script blacklisting")
diff --git a/components/files/configurationmanager.cpp b/components/files/configurationmanager.cpp
index c50c7713e..c7847b122 100644
--- a/components/files/configurationmanager.cpp
+++ b/components/files/configurationmanager.cpp
@@ -109,7 +109,7 @@ void ConfigurationManager::mergeComposingVariables(boost::program_options::varia
 
             boost::any& firstValue = variableValue.value();
             const boost::any& secondValue = second[name].value();
-
+            
             if (firstValue.type() == typeid(Files::EscapePathContainer))
             {
                 auto& firstPathContainer = boost::any_cast<Files::EscapePathContainer&>(firstValue);
@@ -117,6 +117,13 @@ void ConfigurationManager::mergeComposingVariables(boost::program_options::varia
 
                 firstPathContainer.insert(firstPathContainer.end(), secondPathContainer.begin(), secondPathContainer.end());
             }
+            else if (firstValue.type() == typeid(Files::EscapeStringVector))
+            {
+                auto& firstVector = boost::any_cast<Files::EscapeStringVector&>(firstValue);
+                const auto& secondVector = boost::any_cast<const Files::EscapeStringVector&>(secondValue);
+
+                firstVector.mVector.insert(firstVector.mVector.end(), secondVector.mVector.begin(), secondVector.mVector.end());
+            }
             else if (firstValue.type() == typeid(Fallback::FallbackMap))
             {
                 auto& firstMap = boost::any_cast<Fallback::FallbackMap&>(firstValue);