diff --git a/src/libCom/gpHash/gpHashLib.c b/src/libCom/gpHash/gpHashLib.c
index b4e6c2174..77f5bf390 100644
--- a/src/libCom/gpHash/gpHashLib.c
+++ b/src/libCom/gpHash/gpHashLib.c
@@ -57,6 +57,8 @@ DEVELOPMENT CENTER AT ARGONNE NATIONAL LABORATORY (708-252-2000).
 #include <stdlib.h>
 #include <stddef.h>
 #include <gpHash.h>
+#include <lstLib.h>
+
 
 #define 	HASH_NO	256		/* number of hash table entries */
 
diff --git a/src/libCom/gpHashLib.c b/src/libCom/gpHashLib.c
index b4e6c2174..77f5bf390 100644
--- a/src/libCom/gpHashLib.c
+++ b/src/libCom/gpHashLib.c
@@ -57,6 +57,8 @@ DEVELOPMENT CENTER AT ARGONNE NATIONAL LABORATORY (708-252-2000).
 #include <stdlib.h>
 #include <stddef.h>
 #include <gpHash.h>
+#include <lstLib.h>
+
 
 #define 	HASH_NO	256		/* number of hash table entries */