diff --git a/stepmania/src/archutils/Unix/BacktraceNames.cpp b/stepmania/src/archutils/Unix/BacktraceNames.cpp
index d183419baf..5ce8c43bbe 100644
--- a/stepmania/src/archutils/Unix/BacktraceNames.cpp
+++ b/stepmania/src/archutils/Unix/BacktraceNames.cpp
@@ -33,9 +33,7 @@ void BacktraceNames::Demangle()
     free(f);
 }
 #elif defined(HAVE_CXA_DEMANGLE)
-namespace abi {
-	extern "C" char *__cxa_demangle( const char *mangled_name, char *buf, size_t *n, int *status);
-}
+#include <cxxabi.h>
 
 void BacktraceNames::Demangle()
 {