diff --git a/checks/armor.test b/checks/armor.test
index cfd235969..a23f8d8d2 100755
--- a/checks/armor.test
+++ b/checks/armor.test
@@ -734,7 +734,7 @@ wg7Md81a5RI3F2FG8747t9gX
 '
 
 # Bug 1179 solved 2010-05-12:
-# It occured for messages of a multiple of the iobuf block size where
+# It occurred for messages of a multiple of the iobuf block size where
 # the last line had no pad character.  Due to premature popping of the
 # armor filter gpg swalled the CRC line and passed the '-----END...'
 # line on to the decryption layer.
diff --git a/cipher/des.c b/cipher/des.c
index 670ba6598..7eaa2df8b 100644
--- a/cipher/des.c
+++ b/cipher/des.c
@@ -104,7 +104,7 @@
  *
  *     if ( (error_msg = selftest()) )
  *     {
- *	   fprintf(stderr, "An error in the DES/Tripple-DES implementation occured: %s\n", error_msg);
+ *	   fprintf(stderr, "An error in the DES/Tripple-DES implementation occurred: %s\n", error_msg);
  *	   abort();
  *     }
  */
diff --git a/g10/ccid-driver.c b/g10/ccid-driver.c
index 515b15a6b..6f7c9b294 100644
--- a/g10/ccid-driver.c
+++ b/g10/ccid-driver.c
@@ -2264,7 +2264,7 @@ ccid_poll (ccid_driver_t handle)
     }
   else if (msg[0] == RDR_to_PC_HardwareError)    
     {
-      DEBUGOUT ("hardware error occured\n");
+      DEBUGOUT ("hardware error occurred\n");
     }
   else
     {
diff --git a/g10/pkclist.c b/g10/pkclist.c
index 198e3078d..b78070e95 100644
--- a/g10/pkclist.c
+++ b/g10/pkclist.c
@@ -952,7 +952,7 @@ build_pk_list( STRLIST rcpts, PK_LIST *ret_pk_list, unsigned int use )
             }
 
           /* Do group expand here too.  The trick here is to continue
-             the loop if any expansion occured.  The code above will
+             the loop if any expansion occurred.  The code above will
              then list all expanded keys. */
           if (expand_id(answer,&backlog,0))
             continue;
diff --git a/util/regcomp.c b/util/regcomp.c
index 6964df93e..aafb9c853 100644
--- a/util/regcomp.c
+++ b/util/regcomp.c
@@ -1764,7 +1764,7 @@ peek_token_bracket (token, input, syntax)
 
 /* Entry point of the parser.
    Parse the regular expression REGEXP and return the structure tree.
-   If an error is occured, ERR is set by error code, and return NULL.
+   If an error is occurred, ERR is set by error code, and return NULL.
    This function build the following tree, from regular expression <reg_exp>:
            CAT
            / \
@@ -3349,7 +3349,7 @@ build_word_op (dfa, not, err)
 /* This is intended for the expressions like "a{1,3}".
    Fetch a number from `input', and return the number.
    Return -1, if the number field is empty like "{,1}".
-   Return -2, If an error is occured.  */
+   Return -2, If an error is occurred.  */
 
 static int
 fetch_number (input, token, syntax)
diff --git a/util/regex_internal.c b/util/regex_internal.c
index 6f3a96e7d..4349f1b6d 100644
--- a/util/regex_internal.c
+++ b/util/regex_internal.c
@@ -793,7 +793,7 @@ re_node_set_merge (dest, src)
 
 /* Insert the new element ELEM to the re_node_set* SET.
    return 0 if SET already has ELEM,
-   return -1 if an error is occured, return 1 otherwise.  */
+   return -1 if an error is occurred, return 1 otherwise.  */
 
 static int
 re_node_set_insert (set, elem)
@@ -909,7 +909,7 @@ re_node_set_remove_at (set, idx)
 
 
 /* Add the token TOKEN to dfa->nodes, and return the index of the token.
-   Or return -1, if an error will be occured.  */
+   Or return -1, if an error will be occurred.  */
 
 static int
 re_dfa_add_node (dfa, token, mode)