diff --git a/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndexer.java b/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndexer.java
index b0db6ca198..99c5782d25 100644
--- a/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndexer.java
+++ b/arduino-core/src/cc/arduino/contributions/packages/ContributionsIndexer.java
@@ -115,7 +115,7 @@ public void parseIndex() throws Exception {
       try {
         mergeContributions(indexFile);
       } catch (JsonProcessingException e) {
-        System.err.println(format(tr("Skipping contributed index file {0}, parsing error occured:"), indexFile));
+        System.err.println(format(tr("Skipping contributed index file {0}, parsing error occurred:"), indexFile));
         System.err.println(e);
       }
     }
diff --git a/arduino-core/src/processing/app/i18n/Resources_en.po b/arduino-core/src/processing/app/i18n/Resources_en.po
index eed14f14c8..66d509eb7e 100644
--- a/arduino-core/src/processing/app/i18n/Resources_en.po
+++ b/arduino-core/src/processing/app/i18n/Resources_en.po
@@ -2004,8 +2004,8 @@ msgstr "Sketchbook path not defined"
 
 #: ../../../../../arduino-core//src/cc/arduino/contributions/packages/ContributionsIndexer.java:96
 #, java-format
-msgid "Skipping contributed index file {0}, parsing error occured:"
-msgstr "Skipping contributed index file {0}, parsing error occured:"
+msgid "Skipping contributed index file {0}, parsing error occurred:"
+msgstr "Skipping contributed index file {0}, parsing error occurred:"
 
 #: ../../../../../app/src/processing/app/Preferences.java:185
 msgid "Slovak"