diff --git a/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F767xx.py b/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F767xx.py
index 8b53402d9a..8158b665a9 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F767xx.py
+++ b/libraries/AP_HAL_ChibiOS/hwdef/scripts/STM32F767xx.py
@@ -544,7 +544,7 @@ AltFunction_map = {
 	"PC6:USART6_TX"     	:	8,
 	"PC6:DFSDM1_CKIN3"     	:	7,
 	"PC6:FMC_NWAIT"      	:	9,
-	"PC6:SDMMC_D6"     	:	10,
+    "PC6:SDMMC2_D6"     	:	10,
 	"PC7:DCMI_D1"       	:	13,
 	"PC7:EVENTOUT"      	:	15,
 	"PC7:I2S3_MCK"      	:	6,
diff --git a/libraries/AP_InertialSensor/examples/coning.py b/libraries/AP_InertialSensor/examples/coning.py
index 40721fc97a..cd3bc0e857 100755
--- a/libraries/AP_InertialSensor/examples/coning.py
+++ b/libraries/AP_InertialSensor/examples/coning.py
@@ -207,7 +207,7 @@ def filter2p_1khz_30hz(sample, key):
     (delay_element_1, delay_element_2) = filter2p_1khz_30hz_data[key]
     sample_freq = 1000
     cutoff_freq = 30
-    fr = sample_freq/cutoff_freq
+    fr = sample_freq // cutoff_freq
     ohm = tan(pi/fr)
     c = 1.0+2.0*cos(pi/4.0)*ohm + ohm**2
     b0 = ohm**2/c