diff --git a/stepmania/src/archutils/Unix/CrashHandler.h b/stepmania/src/archutils/Unix/CrashHandler.h
index 1f05a3acfe..2f80db5904 100644
--- a/stepmania/src/archutils/Unix/CrashHandler.h
+++ b/stepmania/src/archutils/Unix/CrashHandler.h
@@ -3,7 +3,6 @@
 
 #include <csignal>
 #include <ucontext.h>
-struct BacktraceContext;
 
 namespace CrashHandler
 {