diff --git a/hardsup/table.c b/hardsup/table.c
index 313701fc..41e1b9c0 100644
--- a/hardsup/table.c
+++ b/hardsup/table.c
@@ -7,6 +7,7 @@
 ---------------------------------------------------------------------------*/
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 #include <assert.h>
 #include "table.h"
 
@@ -172,4 +173,4 @@
                 + fFrac*(self->fVal1[i1] - self->fVal1[i1 -1]);    
      return 1;           
    }   
-   
\ No newline at end of file
+