diff --git a/bn_mp_fread.c b/bn_mp_fread.c
index a4fa8c9..b06d988 100644
--- a/bn_mp_fread.c
+++ b/bn_mp_fread.c
@@ -15,6 +15,7 @@
  * Tom St Denis, tstdenis82@gmail.com, http://libtom.org
  */
 
+#ifndef LTM_NO_FILE
 /* read a bigint from a file stream in ASCII */
 int mp_fread(mp_int *a, int radix, FILE *stream)
 {
@@ -59,6 +60,7 @@ int mp_fread(mp_int *a, int radix, FILE *stream)
    
    return MP_OKAY;
 }
+#endif
 
 #endif
 
diff --git a/bn_mp_fwrite.c b/bn_mp_fwrite.c
index 90f1fc5..d7b2ff2 100644
--- a/bn_mp_fwrite.c
+++ b/bn_mp_fwrite.c
@@ -15,6 +15,7 @@
  * Tom St Denis, tstdenis82@gmail.com, http://libtom.org
  */
 
+#ifndef LTM_NO_FILE
 int mp_fwrite(mp_int *a, int radix, FILE *stream)
 {
    char *buf;
@@ -44,6 +45,7 @@ int mp_fwrite(mp_int *a, int radix, FILE *stream)
    XFREE (buf);
    return MP_OKAY;
 }
+#endif
 
 #endif