diff --git a/C/c_interface.c b/C/c_interface.c
index 0986f82a4..8f9ae15fa 100644
--- a/C/c_interface.c
+++ b/C/c_interface.c
@@ -382,6 +382,7 @@ X_API Term    STD_PROTO(YAP_MkVarTerm,(void));
 X_API Bool    STD_PROTO(YAP_IsVarTerm,(Term));
 X_API Bool    STD_PROTO(YAP_IsNonVarTerm,(Term));
 X_API Bool    STD_PROTO(YAP_IsIntTerm,(Term));
+X_API Bool    STD_PROTO(YAP_IsLongIntTerm,(Term));
 X_API Bool    STD_PROTO(YAP_IsBigNumTerm,(Term));
 X_API Bool    STD_PROTO(YAP_IsFloatTerm,(Term));
 X_API Bool    STD_PROTO(YAP_IsDbRefTerm,(Term));
@@ -579,6 +580,12 @@ YAP_IsIntTerm(Term t)
   return IsIntegerTerm(t);
 }
 
+X_API Bool 
+YAP_IsLongIntTerm(Term t)
+{
+  return IsLongIntTerm(t);
+}
+
 X_API Bool 
 YAP_IsBigNumTerm(Term t)
 {
diff --git a/include/YapInterface.h b/include/YapInterface.h
index fe6819d6e..e3c80693f 100644
--- a/include/YapInterface.h
+++ b/include/YapInterface.h
@@ -96,6 +96,9 @@ extern X_API YAP_Term PROTO(YAP_MkVarTerm,(void));
 /*  YAP_Bool IsIntTerm(YAP_Term)  */
 extern X_API YAP_Bool PROTO(YAP_IsIntTerm,(YAP_Term));
 
+/*  YAP_Bool IsLongIntTerm(YAP_Term)  */
+extern X_API YAP_Bool PROTO(YAP_IsLongIntTerm,(YAP_Term));
+
 /*  YAP_Bool IsBigNumTerm(YAP_Term)  */
 extern X_API YAP_Bool PROTO(YAP_IsBigNumTerm,(YAP_Term));