diff --git a/src/mac/f9/f9_test.c b/src/mac/f9/f9_test.c
index f70bfeac0..779fdf130 100644
--- a/src/mac/f9/f9_test.c
+++ b/src/mac/f9/f9_test.c
@@ -10,7 +10,7 @@
 #ifdef LTC_F9_MODE
 
 /** Test f9-MAC mode
-  Return CRYPT_OK on succes
+  Return CRYPT_OK on success
 */
 int f9_test(void)
 {
diff --git a/src/mac/xcbc/xcbc_test.c b/src/mac/xcbc/xcbc_test.c
index 0198673e2..23555de04 100644
--- a/src/mac/xcbc/xcbc_test.c
+++ b/src/mac/xcbc/xcbc_test.c
@@ -10,7 +10,7 @@
 #ifdef LTC_XCBC
 
 /** Test XCBC-MAC mode
-  Return CRYPT_OK on succes
+  Return CRYPT_OK on success
 */
 int xcbc_test(void)
 {