diff --git a/arch/arm/src/stm32f7/stm32_bbsram.c b/arch/arm/src/stm32f7/stm32_bbsram.c
index 2d7c57c079d..34086632b2c 100644
--- a/arch/arm/src/stm32f7/stm32_bbsram.c
+++ b/arch/arm/src/stm32f7/stm32_bbsram.c
@@ -756,7 +756,7 @@ int stm32_bbsraminitialize(char *devpath, int *sizes)
   memset(g_bbsram, 0, sizeof(g_bbsram));
 
   /* Clocking for the PWR block must be provided.  However, this is done
-   * unconditionally in stm32f40xxx_rcc.c on power up.  This done
+   * unconditionally in stm32f7xxxx_rcc.c on power up.  This done
    * unconditionally because the PWR block is also needed to set the
    * internal voltage regulator for maximum performance.
    */
diff --git a/arch/arm/src/stm32f7/stm32_dma.c b/arch/arm/src/stm32f7/stm32_dma.c
index 7b03377bccc..adfee405cc8 100644
--- a/arch/arm/src/stm32f7/stm32_dma.c
+++ b/arch/arm/src/stm32f7/stm32_dma.c
@@ -521,9 +521,9 @@ void weak_function up_dmainitialize(void)
  *   version.  Feel free to do that if that is what you need.
  *
  * Input parameter:
- *   dmamap - Identifies the stream/channel resource. For the STM32 F4, this
+ *   dmamap - Identifies the stream/channel resource. For the STM32 F7, this
  *     is a bit-encoded  value as provided by the DMAMAP_* definitions
- *     in chip/stm32f40xxx_dma.h
+ *     in chip/stm32f7xxxxxxx_dma.h
  *
  * Returned Value:
  *   Provided that 'dmamap' is valid, this function ALWAYS returns a non-NULL,
diff --git a/arch/arm/src/stm32f7/stm32_dma.h b/arch/arm/src/stm32f7/stm32_dma.h
index f78221c9499..70b5173467f 100644
--- a/arch/arm/src/stm32f7/stm32_dma.h
+++ b/arch/arm/src/stm32f7/stm32_dma.h
@@ -62,8 +62,8 @@
  * Public Types
  ************************************************************************************/
 
-/* DMA_HANDLE provides an opaque are reference that can be used to represent a DMA
- * channel (F1) or a DMA stream (F4).
+/* DMA_HANDLE Provides an opaque are reference that can be used to represent a DMA
+ * a DMA stream.
  */
 
 typedef FAR void *DMA_HANDLE;
@@ -137,10 +137,8 @@ extern "C"
  *
  * Input parameter:
  *   chan - Identifies the stream/channel resource
- *     For the STM32 F1, this is simply the channel number as provided by
- *     the DMACHAN_* definitions in chip/stm32f10xxx_dma.h.
- *     For the STM32 F4, this is a bit encoded value as provided by the
- *     the DMAMAP_* definitions in chip/stm32f40xxx_dma.h
+ *     For the STM32 F7, this is a bit encoded value as provided by the
+ *     the DMAMAP_* definitions  in chip/stm32f7xxxxxxx_dma.h
  *
  * Returned Value:
  *   Provided that 'chan' is valid, this function ALWAYS returns a non-NULL,