diff --git a/packages/seacas/libraries/ioss/src/cgns/Iocgns_Utils.C b/packages/seacas/libraries/ioss/src/cgns/Iocgns_Utils.C
index 3058e08dbf01..af70a4ba3f26 100644
--- a/packages/seacas/libraries/ioss/src/cgns/Iocgns_Utils.C
+++ b/packages/seacas/libraries/ioss/src/cgns/Iocgns_Utils.C
@@ -44,6 +44,7 @@
 #endif
 #include "cgns/Iocgns_StructuredZoneData.h"
 #include "cgns/Iocgns_Utils.h"
+#include <cgnsconfig.h>
 #include <cgnstypes.h>
 #include <cmath>
 #include <cstring>