diff --git a/src/core/str.h b/src/core/str.h
index d7977652d9a..063a9e9398a 100644
--- a/src/core/str.h
+++ b/src/core/str.h
@@ -143,7 +143,7 @@ typedef struct _str str;
 	} while(0)
 
 /**
- * str with value: not null and not emptu
+ * str with value: not null and not empty
  */
 #define STR_WITHVAL(_sp) ((_sp) && ((_sp)->s) && ((_sp)->len))
 
diff --git a/src/core/ut.c b/src/core/ut.c
index 8dde51aaffc..a581f98e9f6 100644
--- a/src/core/ut.c
+++ b/src/core/ut.c
@@ -97,7 +97,7 @@ int group2gid(int* gid, char* group)
 
 
 /*
- * Replacement of timegm (does not exists on all platforms
+ * Replacement of timegm (does not exists on all platforms)
  * Taken from
  * http://lists.samba.org/archive/samba-technical/2002-November/025737.html
  */
@@ -232,7 +232,7 @@ unsigned int get_sys_version(int* major, int* minor, int* minor2)
 
 /** transform a relative pathname into an absolute one.
  * @param base  - base file, used to extract the absolute path prefix.
- *                Might be NULL, in which case the path of the ser.cfg is
+ *                Might be NULL, in which case the path of the kamailio.cfg is
  *                used.
  * @param file  - file path to be transformed. If it's already absolute
  *                (starts with '/') is left alone. If not the result will
@@ -301,7 +301,7 @@ char* get_abs_pathname(str* base, str* file)
 
 
 /**
- * @brief search for occurence of needle in text
+ * @brief search for occurrence of needle in text
  * @return pointer to start of needle in text or NULL if the needle
  *	is not found
  */
@@ -323,7 +323,7 @@ char *str_search(str *text, str *needle)
 }
 
 /**
- * @brief search for occurence of needlez starting from vstart and before vend
+ * @brief search for occurrence of needlez starting from vstart and before vend
  * @return pointer to start of needle in text or NULL if the needle
  *	is not found
  */
@@ -346,7 +346,7 @@ char *stre_search_strz(char *vstart, char *vend, char *needlez)
 }
 
 /**
- * @brief case insensitive search for occurence of needle in text
+ * @brief case insensitive search for occurrence of needle in text
  * @return pointer to start of needle in text or NULL if the needle
  *	is not found
  */
@@ -393,7 +393,7 @@ char *str_casesearch_strz(str *text, char *needlez)
 }
 
 /**
- * @brief search for last occurence of needle in text (reverse search)
+ * @brief search for last occurrence of needle in text (reverse search)
  * @return pointer to start of needle in text or NULL if the needle
  *	is not found
  */
@@ -415,7 +415,7 @@ char *str_rsearch(str *text, str *needle)
 }
 
 /**
- * @brief case insensitive search for last occurence of needle in text (reverse search)
+ * @brief case insensitive search for last occurrence of needle in text (reverse search)
  * @return pointer to start of needle in text or NULL if the needle
  *	is not found
  */
diff --git a/src/core/ut.h b/src/core/ut.h
index 44bd0e75c72..7792a865ef0 100644
--- a/src/core/ut.h
+++ b/src/core/ut.h
@@ -729,7 +729,7 @@ static inline int str2int(str* _s, unsigned int* _r)
 
 
 /*
- * Convert an str to signed long
+ * Convert a str to signed long
  */
 static inline int str2slong(str* _s, long* _r)
 {
@@ -738,7 +738,7 @@ static inline int str2slong(str* _s, long* _r)
 
 
 /*
- * Convert an str to signed integer
+ * Convert a str to signed integer
  */
 static inline int str2sint(str* _s, int* _r)
 {
@@ -747,7 +747,7 @@ static inline int str2sint(str* _s, int* _r)
 
 
 /*
- * Convert an strz to integer
+ * Convert a strz to integer
  */
 static inline int strz2int(char* _s, unsigned int* _r)
 {
@@ -770,7 +770,7 @@ static inline int strz2int(char* _s, unsigned int* _r)
 }
 
 /*
- * Convert an strz to signed integer
+ * Convert a strz to signed integer
  */
 static inline int strz2sint(char* _s, int* _r)
 {
diff --git a/src/modules/auth/doc/auth.xml b/src/modules/auth/doc/auth.xml
index 6f20e8c71d4..137a5a5f56d 100644
--- a/src/modules/auth/doc/auth.xml
+++ b/src/modules/auth/doc/auth.xml
@@ -66,7 +66,14 @@
     <section id="auth.dep">
 	<title>Dependencies</title>
 	<para>
-	    The module does not depend on any other module.
+		The following modules must be loaded before this module:
+			<itemizedlist>
+			<listitem>
+			<para>
+				<emphasis>sl</emphasis> - stateless reply.
+			</para>
+			</listitem>
+			</itemizedlist>
 	</para>
     </section>
     
diff --git a/src/modules/pua_dialoginfo/pua_dialoginfo.c b/src/modules/pua_dialoginfo/pua_dialoginfo.c
index 0385ed90dd2..7b27e666c55 100644
--- a/src/modules/pua_dialoginfo/pua_dialoginfo.c
+++ b/src/modules/pua_dialoginfo/pua_dialoginfo.c
@@ -643,7 +643,7 @@ struct dlginfo_cell* get_dialog_data(struct dlg_cell *dlg, int type, int disable
         }
 
 #ifdef PUA_DIALOGINFO_DEBUG
-	/* dialog callback testing (registered last to be executed frist) */
+	/* dialog callback testing (registered last to be executed first) */
 	if (dlg_api.register_dlgcb(dlg,
 				DLGCB_FAILED| DLGCB_CONFIRMED_NA | DLGCB_CONFIRMED
 				| DLGCB_REQ_WITHIN | DLGCB_TERMINATED | DLGCB_EXPIRED