diff --git a/src/include/log.h b/src/include/log.h
index 157ce77..1167e53 100644
--- a/src/include/log.h
+++ b/src/include/log.h
@@ -1,13 +1,4 @@
 #pragma once
 
-#ifdef DEBUG
-#ifndef dprintf
-/// Debug Output API
-#define dprintf(fmt,args...) printf("%s: ",__PRETTY_FUNCTION__);printf(fmt,##args)
-#endif /// End of dprintf
-#else
-#ifndef dprintf
-/// Debug Output API
-#define dprintf(fmt,args...)
-#endif /// End of dprintf
-#endif /// End of DEBUG
+/// Debug output
+void dprintf(const char* fmt,...);
diff --git a/src/include/zlib_wrapper.h b/src/include/zlib_wrapper.h
index e1f8fcc..8da023e 100644
--- a/src/include/zlib_wrapper.h
+++ b/src/include/zlib_wrapper.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#ifdef __WIN32 /// Windows Needs this Definition.
+#ifdef _WIN32 /// Windows Needs this Definition.
 #define ZLIB_WINAPI
 #endif // __WIN32
 #include "zlib/zlib.h"
diff --git a/src/log.cpp b/src/log.cpp
new file mode 100644
index 0000000..3a78541
--- /dev/null
+++ b/src/log.cpp
@@ -0,0 +1,19 @@
+#include "log.h"
+#include <cstdarg>
+#include <cstdio>
+using namespace std;
+
+#ifdef DEBUG
+void dprintf(const char* fmt,...)
+{
+    va_list ap;
+    va_start(ap,fmt);
+    vprintf(fmt,ap);
+    va_end(ap);
+}
+#else
+void dprintf(const char* fmt,...)
+{
+
+}
+#endif