diff --git a/JGE/include/OutputCapturer.h b/JGE/include/OutputCapturer.h
index fe23f1e89..4b32e301a 100644
--- a/JGE/include/OutputCapturer.h
+++ b/JGE/include/OutputCapturer.h
@@ -14,18 +14,9 @@ private:
     static boost::mutex mMutex;
 
 public:
-    static void add(const std::string& s) {
-        boost::mutex::scoped_lock lock(mMutex);
-        stream << s << "\n";
-    }
-    static void debugAndClear() {
-        stream.flush();
-        qDebug("%s", stream.str().c_str());
-        stream.str("");
-    }
-    static void clear() {
-        stream.str("");
-    }
+    static void add(const std::string& s);
+    static void debugAndClear();
+    static void clear();
 };
 #endif
 
diff --git a/JGE/src/OutputCapturer.cpp b/JGE/src/OutputCapturer.cpp
index 41dc4fb81..902dc10e8 100644
--- a/JGE/src/OutputCapturer.cpp
+++ b/JGE/src/OutputCapturer.cpp
@@ -1,4 +1,22 @@
 #include "../include/OutputCapturer.h"
 
 std::ostringstream OutputCapturer::stream;
-boost::mutex mMutex;
+boost::mutex OutputCapturer::mMutex;
+
+void OutputCapturer::add(const std::string& s)
+{
+    boost::mutex::scoped_lock lock(mMutex);
+    stream << s << "\n";
+}
+
+void OutputCapturer::debugAndClear()
+{
+    stream.flush();
+    qDebug("%s", stream.str().c_str());
+    stream.str("");
+}
+
+void OutputCapturer::clear()
+{
+    stream.str("");
+}