diff --git a/demos/ARMCM3-STM32F103-FATFS-GCC/main.c b/demos/ARMCM3-STM32F103-FATFS-GCC/main.c
index e01977ac0..ef06c6614 100644
--- a/demos/ARMCM3-STM32F103-FATFS-GCC/main.c
+++ b/demos/ARMCM3-STM32F103-FATFS-GCC/main.c
@@ -105,6 +105,8 @@ static void TimerHandler(eventid_t id) {
  */
 static void InsertHandler(eventid_t id) {
   FRESULT err;
+  uint32_t clusters;
+  FATFS *fsp;
 
   (void)id;
   /*
@@ -117,6 +119,11 @@ static void InsertHandler(eventid_t id) {
     mmcDisconnect(&MMCD1);
     return;
   }
+  err = f_getfree("/", &clusters, &fsp);
+  if (err != FR_OK) {
+    mmcDisconnect(&MMCD1);
+    return;
+  }
 }
 
 /*
diff --git a/ext/ff007e-patched.zip b/ext/ff007e-patched.zip
index 8a2293686..7b7cd3160 100644
Binary files a/ext/ff007e-patched.zip and b/ext/ff007e-patched.zip differ
diff --git a/readme.txt b/readme.txt
index da90a9c83..3ab69d454 100644
--- a/readme.txt
+++ b/readme.txt
@@ -12,6 +12,9 @@
 - NEW: New SPI (master) driver model.
 - NEW: SPI driver for STM32 implementing the new SPI driver model.
 - NEW: New ADC (streaming capable) driver model.
+- NEW: Generic MMC (over SPI) driver.
+- NEW: Added a STM32 demo that integrates the MMC driver and the FatFs
+  file system.
 - CHANGE: Moved the STM32 firmware library under ./ext, this way there is no
   need to duplicate it in each demo program.
 - CHANGE: Moved the file stm32f10x.h from the demos to the platforms support