diff --git a/config.lib b/config.lib
--- a/config.lib
+++ b/config.lib
@@ -862,7 +862,7 @@ check_params() {
 		endian="PREPROCESSOR"
 	fi
 
-	log 1 "checking endianess... $endian"
+	log 1 "checking endianness... $endian"
 
 	# Suppress language errors when there is a version defined, indicating a release
 	#  It just isn't pretty if any release produces warnings in the languages.
diff --git a/docs/desync.txt b/docs/desync.txt
--- a/docs/desync.txt
+++ b/docs/desync.txt
@@ -106,7 +106,7 @@ 1.2) What is a Desync and how is it dete
   The important thing here is: The detection of the Desync is
   only an ultimate failure detection. It does not give any
   indication on when the Desync happened. The Desync may after
-  all have occured long ago, and just did not affect the checksum
+  all have occurred long ago, and just did not affect the checksum
   up to now. The checksum may have matched 10 times or more
   since the Desync happend, and only now the Desync has spiraled
   enough to finally affect the checksum. (There was once a desync
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -7659,7 +7659,7 @@ AllowedSubtags _tags_root[] = {
  * Try to skip the current node and all subnodes (if it's a branch node).
  * @param buf Buffer.
  * @param type The node type to skip.
- * @return True if we could skip the node, false if an error occured.
+ * @return True if we could skip the node, false if an error occurred.
  */
 static bool SkipUnknownInfo(ByteReader *buf, byte type)
 {
diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -658,7 +658,7 @@ static void UpdateStationSignCoord(BaseS
  * @param reuse Whether to try to reuse a deleted station (gray sign) if possible
  * @param area Area occupied by the new part
  * @param name_class Station naming class to use to generate the new station's name
- * @return Command error that occured, if any
+ * @return Command error that occurred, if any
  */
 static CommandCost BuildStationPart(Station **st, DoCommandFlag flags, bool reuse, TileArea area, StationNaming name_class)
 {