diff --git a/library/x509.c b/library/x509.c
index 08a1ec3..e97f82d 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -449,7 +449,7 @@
             if( *p == end_set )
                 break;
 
-            /* Mark this item as being only one in a set */
+            /* Mark this item as being no the only one in a set */
             cur->next_merged = 1;
 
             cur->next = mbedtls_malloc( sizeof( mbedtls_x509_name ) );