diff --git a/src/BufferView_pimpl.C b/src/BufferView_pimpl.C
index 5fc8d5b633..336870a8a2 100644
--- a/src/BufferView_pimpl.C
+++ b/src/BufferView_pimpl.C
@@ -3,6 +3,7 @@
 #include <ctime>
 #include <unistd.h>
 #include <sys/wait.h>
+#include <locale.h>
 
 #ifdef __GNUG__
 #pragma implementation