diff --git a/indra/newview/animationexplorer.cpp b/indra/newview/animationexplorer.cpp
index 83f866650a..0841bcabd5 100644
--- a/indra/newview/animationexplorer.cpp
+++ b/indra/newview/animationexplorer.cpp
@@ -25,6 +25,8 @@
  * $/LicenseInfo$
  */
 
+#include "llviewerprecompiledheaders.h"
+
 #include "animationexplorer.h"
 
 #include "indra_constants.h"		// for MASK_ALT etc.