diff --git a/src/extlib/ib_udf2.sql b/src/extlib/ib_udf2.sql
index d76a83d2d8..9534088522 100644
--- a/src/extlib/ib_udf2.sql
+++ b/src/extlib/ib_udf2.sql
@@ -591,8 +591,6 @@ DECLARE EXTERNAL FUNCTION sqrt
 	ENTRY_POINT 'IB_UDF_sqrt' MODULE_NAME 'ib_udf';
 
 
-
-
 /*****************************************
  *
  *	s r a n d
diff --git a/src/jrd/os/path_utils.h b/src/jrd/os/path_utils.h
index be3ac9930e..4af389c2f3 100644
--- a/src/jrd/os/path_utils.h
+++ b/src/jrd/os/path_utils.h
@@ -119,9 +119,9 @@ public:
 	/** Concatenates the two paths given in the second and third parameters,
 		and writes the resulting path into the first parameter.  The
 		two path input arguments (arg 2 and 3) are concatinated in the order
-		arg2 arg3.  The concatination is done is such a way as to remove
+		arg2 arg3.  The concatenation is done is such a way as to remove
 		any duplicate directory separators that may have resulted from
-		a simple string concatination of the arguments with the directory
+		a simple string concatenation of the arguments with the directory
 		separator character.
 	**/
 	static void concatPath(Firebird::PathName&, const Firebird::PathName&,
diff --git a/src/jrd/y_handle.h b/src/jrd/y_handle.h
index 3cada654dd..5c69ad94e9 100644
--- a/src/jrd/y_handle.h
+++ b/src/jrd/y_handle.h
@@ -30,7 +30,7 @@
  */
 
 /*
- * This definitions placed into separate file 
+ * These definitions placed into separate file
  * to avoid multiple definition of struct why_hndl in why.cpp
  * and dsql.cpp
  *
diff --git a/src/misc/gds_header.txt b/src/misc/gds_header.txt
index 98f13c4274..74cee2960c 100644
--- a/src/misc/gds_header.txt
+++ b/src/misc/gds_header.txt
@@ -2,7 +2,7 @@
  * Module: gds.h
  *
  * The content of this file was generated by the Firebird project
- * and is a concatination of several header source files, that may
+ * and is a concatenation of several header source files, that may
  * also explain the unusual #ifdef structures within this file.
  * 
  * 
diff --git a/src/misc/ibase_header.txt b/src/misc/ibase_header.txt
index f55dbd9be5..f37db06c3f 100644
--- a/src/misc/ibase_header.txt
+++ b/src/misc/ibase_header.txt
@@ -2,7 +2,7 @@
  * Module: ibase.h
  *
  * The content of this file was generated by the Firebird project
- * and is a concatination of several header source files, that may
+ * and is a concatenation of several header source files, that may
  * also explain the unusual #ifdef structures within this file.
  * 
  *