diff --git a/plugins/VersionUpgrade/VersionUpgrade30to31/VersionUpgrade30to31.py b/plugins/VersionUpgrade/VersionUpgrade30to31/VersionUpgrade30to31.py
index 517b5659b2..c1f32b424f 100644
--- a/plugins/VersionUpgrade/VersionUpgrade30to31/VersionUpgrade30to31.py
+++ b/plugins/VersionUpgrade/VersionUpgrade30to31/VersionUpgrade30to31.py
@@ -59,6 +59,12 @@ _EMPTY_CONTAINER_DICT = {
 }
 
 
+# Renamed definition files
+_RENAMED_DEFINITION_DICT = {
+    "jellybox": "imade3d_jellybox",
+}
+
+
 class VersionUpgrade30to31(VersionUpgrade):
     ##  Gets the version number from a CFG file in Uranium's 3.0 format.
     #
@@ -122,6 +128,10 @@ class VersionUpgrade30to31(VersionUpgrade):
             if len(all_quality_changes) <= 1 and not parser.has_option("metadata", "extruder"):
                 self._createExtruderQualityChangesForSingleExtrusionMachine(filename, parser)
 
+        # Check renamed definitions
+        if "definition" in parser["general"] and parser["general"]["definition"] in _RENAMED_DEFINITION_DICT:
+            parser["general"]["definition"] = _RENAMED_DEFINITION_DICT[parser["general"]["definition"]]
+
         # Update version numbers
         parser["general"]["version"] = "2"
         parser["metadata"]["setting_version"] = "4"
@@ -156,6 +166,10 @@ class VersionUpgrade30to31(VersionUpgrade):
                 if parser.has_option("containers", key) and parser["containers"][key] == "empty":
                     parser["containers"][key] = specific_empty_container
 
+            # check renamed definition
+            if parser.has_option("containers", "6") and parser["containers"]["6"] in _RENAMED_DEFINITION_DICT:
+                parser["containers"]["6"] = _RENAMED_DEFINITION_DICT[parser["containers"]["6"]]
+
         # Update version numbers
         if "general" not in parser:
             parser["general"] = {}
@@ -219,6 +233,10 @@ class VersionUpgrade30to31(VersionUpgrade):
         extruder_quality_changes_parser["general"]["name"] = global_quality_changes["general"]["name"]
         extruder_quality_changes_parser["general"]["definition"] = global_quality_changes["general"]["definition"]
 
+        # check renamed definition
+        if extruder_quality_changes_parser["general"]["definition"] in _RENAMED_DEFINITION_DICT:
+            extruder_quality_changes_parser["general"]["definition"] = _RENAMED_DEFINITION_DICT[extruder_quality_changes_parser["general"]["definition"]]
+
         extruder_quality_changes_parser.add_section("metadata")
         extruder_quality_changes_parser["metadata"]["quality_type"] = global_quality_changes["metadata"]["quality_type"]
         extruder_quality_changes_parser["metadata"]["type"] = global_quality_changes["metadata"]["type"]