diff --git a/c/rail-fence-cipher/src/rail_fence_cipher.c b/c/rail-fence-cipher/src/rail_fence_cipher.c
index 63c9a94..9f07cb0 100644
--- a/c/rail-fence-cipher/src/rail_fence_cipher.c
+++ b/c/rail-fence-cipher/src/rail_fence_cipher.c
@@ -3,7 +3,7 @@
 #include <string.h>
 #include <stdbool.h>
 
-/* See GNUmakefile below explanation
+/* See GNUmakefile below for explanation
  * https://github.com/braoult/exercism/blob/master/c/templates/GNUmakefile
  */
 #if defined UNIT_TEST || defined DEBUG
diff --git a/c/templates/ex.c b/c/templates/ex.c
index 3bed2fd..77ed3e1 100644
--- a/c/templates/ex.c
+++ b/c/templates/ex.c
@@ -1,4 +1,4 @@
-/* See GNUmakefile below explanation
+/* See GNUmakefile below for explanation
  * https://github.com/braoult/exercism/blob/master/c/templates/GNUmakefile
  */
 #if defined UNIT_TEST || defined DEBUG