diff --git a/common/audit.h b/common/audit.h
index 4ef2645da..05f39533d 100644
--- a/common/audit.h
+++ b/common/audit.h
@@ -185,7 +185,7 @@ typedef enum
        if no real recipient has been given.  */
 
     AUDIT_SESSION_KEY,     /* string */
-    /* Mark the creation or availibility of the session key.  The
+    /* Mark the creation or availability of the session key.  The
        parameter is the algorithm ID.  */
 
     AUDIT_ENCRYPTED_TO,   /* cert, err */
diff --git a/common/sexp-parse.h b/common/sexp-parse.h
index 4f77f1430..0403d65f5 100644
--- a/common/sexp-parse.h
+++ b/common/sexp-parse.h
@@ -105,7 +105,7 @@ smatch (unsigned char const **buf, size_t buflen, const char *token)
 }
 
 /* Format VALUE for use as the length indicatior of an S-expression.
-   The caller needs to provide a buffer HELP_BUFFER wth a length of
+   The caller needs to provide a buffer HELP_BUFFER with a length of
    HELP_BUFLEN.  The return value is a pointer into HELP_BUFFER with
    the formatted length string.  The colon and a trailing nul are
    appended.  HELP_BUFLEN must be at least 3 - a more useful value is
diff --git a/dirmngr/cdb.h b/dirmngr/cdb.h
index 0c0d2702a..5d46f6956 100644
--- a/dirmngr/cdb.h
+++ b/dirmngr/cdb.h
@@ -85,7 +85,7 @@ int cdb_make_put(struct cdb_make *cdbmp,
 		 const void *key, cdbi_t klen,
 		 const void *val, cdbi_t vlen,
 		 int flag);
-#define CDB_PUT_ADD	0	/* add unconditionnaly, like cdb_make_add() */
+#define CDB_PUT_ADD	0	/* add unconditionally, like cdb_make_add() */
 #define CDB_PUT_REPLACE	1	/* replace: do not place to index OLD record */
 #define CDB_PUT_INSERT	2	/* add only if not already exists */
 #define CDB_PUT_WARN	3	/* add unconditionally but ret. 1 if exists */
diff --git a/g10/key-clean.h b/g10/key-clean.h
index a0fb76950..c4f164928 100644
--- a/g10/key-clean.h
+++ b/g10/key-clean.h
@@ -23,7 +23,7 @@
 
 #include "gpg.h"
 
-/* No explict cleaning.  */
+/* No explicit cleaning.  */
 #define KEY_CLEAN_NONE      0
 /* Remove only invalid subkeys (ie. missing key-bindings) */
 #define KEY_CLEAN_INVALID   1
diff --git a/g10/packet.h b/g10/packet.h
index 6e1438be6..d088bf432 100644
--- a/g10/packet.h
+++ b/g10/packet.h
@@ -244,7 +244,7 @@ typedef struct
   const byte *trust_regexp;
   struct revocation_key *revkey;
   int numrevkeys;
-  int help_counter;          /* Used internally bu some fucntions.  */
+  int help_counter;          /* Used internally bu some functions.  */
   pka_info_t *pka_info;      /* Malloced PKA data or NULL if not
                                 available.  See also flags.pka_tried. */
   char *signers_uid;         /* Malloced value of the SIGNERS_UID
diff --git a/sm/gpgsm.h b/sm/gpgsm.h
index d3fbde515..7a5e4917d 100644
--- a/sm/gpgsm.h
+++ b/sm/gpgsm.h
@@ -76,7 +76,7 @@ struct
   const char *protect_tool_program;
   char *outfile;    /* name of output file */
 
-  int with_key_data;/* include raw key in the column delimted output */
+  int with_key_data;/* include raw key in the column delimited output */
 
   int fingerprint;  /* list fingerprints in all key listings */
 
diff --git a/tools/gpgtar.h b/tools/gpgtar.h
index 8cbe80bbb..28d3d88b1 100644
--- a/tools/gpgtar.h
+++ b/tools/gpgtar.h
@@ -88,7 +88,7 @@ typedef enum
   } typeflag_t;
 
 
-/* The internal represenation of a TAR header.  */
+/* The internal representation of a TAR header.  */
 struct tar_header_s;
 typedef struct tar_header_s *tar_header_t;
 struct tar_header_s