diff --git a/configs/sama5d3-xplained/include/board.h b/configs/sama5d3-xplained/include/board.h
index 1232770b87d..db5f1c47f5a 100644
--- a/configs/sama5d3-xplained/include/board.h
+++ b/configs/sama5d3-xplained/include/board.h
@@ -64,7 +64,7 @@
  *
  * In this case, we don not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #  include <arch/board/board_sdram.h>
diff --git a/configs/sama5d3-xplained/include/board_sdram.h b/configs/sama5d3-xplained/include/board_sdram.h
index 5ea28fe0b21..5d562744465 100644
--- a/configs/sama5d3-xplained/include/board_sdram.h
+++ b/configs/sama5d3-xplained/include/board_sdram.h
@@ -54,7 +54,7 @@
  *
  * In this case, we do not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #define BOARD_MAINCK_FREQUENCY     BOARD_MAINOSC_FREQUENCY
diff --git a/configs/sama5d3x-ek/include/board.h b/configs/sama5d3x-ek/include/board.h
index fc50b17865c..2aa6f0c8187 100644
--- a/configs/sama5d3x-ek/include/board.h
+++ b/configs/sama5d3x-ek/include/board.h
@@ -64,7 +64,7 @@
  *
  * In this case, we don not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #  include <arch/board/board_sdram.h>
diff --git a/configs/sama5d3x-ek/include/board_sdram.h b/configs/sama5d3x-ek/include/board_sdram.h
index f6bdbb46d0c..669bfe38543 100644
--- a/configs/sama5d3x-ek/include/board_sdram.h
+++ b/configs/sama5d3x-ek/include/board_sdram.h
@@ -54,7 +54,7 @@
  *
  * In this case, we do not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #define BOARD_MAINCK_FREQUENCY     BOARD_MAINOSC_FREQUENCY
diff --git a/configs/sama5d4-ek/include/board.h b/configs/sama5d4-ek/include/board.h
index d28b3f39c47..6b170df4d1f 100644
--- a/configs/sama5d4-ek/include/board.h
+++ b/configs/sama5d4-ek/include/board.h
@@ -64,7 +64,7 @@
  *
  * In this case, we don not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #  include <arch/board/board_sdram.h>
diff --git a/configs/sama5d4-ek/include/board_sdram.h b/configs/sama5d4-ek/include/board_sdram.h
index 00c91c0defa..8870475ec22 100644
--- a/configs/sama5d4-ek/include/board_sdram.h
+++ b/configs/sama5d4-ek/include/board_sdram.h
@@ -54,7 +54,7 @@
  *
  * In this case, we do not reconfigure the clocking.  Rather, we need to query
  * the register settings to determine the clock frequencies.  We can only assume that
- * the Main clock source in the on-board 12MHz crystal.
+ * the Main clock source is the on-board 12MHz crystal.
  */
 
 #define BOARD_MAINCK_FREQUENCY     BOARD_MAINOSC_FREQUENCY