diff --git a/mbed_lib.json b/mbed_lib.json
index 5eefd2978d..862b99e7d7 100644
--- a/mbed_lib.json
+++ b/mbed_lib.json
@@ -1,6 +1,10 @@
 {
     "name": "dataflash",
     "config": {
+        "SPI_MOSI": "NC",
+        "SPI_MISO": "NC",
+        "SPI_CLK":  "NC",
+        "SPI_CS":   "NC",
         "binary-size": {
             "help": "Configure device to use binary address space.",
             "value": "0"