diff --git a/components/storage/blockdevice/COMPONENT_DATAFLASH/DataFlashBlockDevice.h b/components/storage/blockdevice/COMPONENT_DATAFLASH/DataFlashBlockDevice.h
index a1a671dc33..52e2600e09 100644
--- a/components/storage/blockdevice/COMPONENT_DATAFLASH/DataFlashBlockDevice.h
+++ b/components/storage/blockdevice/COMPONENT_DATAFLASH/DataFlashBlockDevice.h
@@ -74,7 +74,7 @@ public:
                          PinName miso,
                          PinName sclk,
                          PinName csel,
-                         int freq = 40000000,
+                         int freq = MBED_CONF_DATAFLASH_SPI_FREQ,
                          PinName nowp = NC);
 
     /** Initialize a block device
diff --git a/components/storage/blockdevice/COMPONENT_DATAFLASH/mbed_lib.json b/components/storage/blockdevice/COMPONENT_DATAFLASH/mbed_lib.json
index 862b99e7d7..3846bb7457 100644
--- a/components/storage/blockdevice/COMPONENT_DATAFLASH/mbed_lib.json
+++ b/components/storage/blockdevice/COMPONENT_DATAFLASH/mbed_lib.json
@@ -5,6 +5,7 @@
         "SPI_MISO": "NC",
         "SPI_CLK":  "NC",
         "SPI_CS":   "NC",
+        "SPI_FREQ": "40000000",
         "binary-size": {
             "help": "Configure device to use binary address space.",
             "value": "0"