diff --git a/development/CI/bin/check_git_log_for_unrecognised_email_addresses.sh b/development/CI/bin/check_git_log_for_unrecognised_email_addresses.sh
index 5b6646c695..eaaa26f8ec 100755
--- a/development/CI/bin/check_git_log_for_unrecognised_email_addresses.sh
+++ b/development/CI/bin/check_git_log_for_unrecognised_email_addresses.sh
@@ -48,7 +48,7 @@ EOF
 
 
 function fail() {
-    printf "An error occured: %s\n" "$*"
+    printf "An error occurred: %s\n" "$*"
     exit 1
 }
 
diff --git a/development/autotests/searchPatterns.pl b/development/autotests/searchPatterns.pl
index 0b299cb817..4202a1446c 100755
--- a/development/autotests/searchPatterns.pl
+++ b/development/autotests/searchPatterns.pl
@@ -99,7 +99,7 @@ print "\nControlfile\t= $patternsfile\n";
 print "Log-file\t= $logfile\n\n";
 &readPatterns($patternsfile);
 if (&processLogFile($logfile) > 0) {
-  print "Errors occured, exiting\n";
+  print "Errors occurred, exiting\n";
   exit(1);
 }
 
diff --git a/lib/lyx2lyx/LyX.py b/lib/lyx2lyx/LyX.py
index 50c98d2cd3..034f2cceaf 100644
--- a/lib/lyx2lyx/LyX.py
+++ b/lib/lyx2lyx/LyX.py
@@ -701,7 +701,7 @@ class LyX_base:
                     try:
                         conv(self)
                     except:
-                        self.warning("An error ocurred in %s, %s" %
+                        self.warning("An error occurred in %s, %s" %
                                      (version, str(conv)),
                                      default_debug__)
                         if not self.try_hard: