diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index adeac60c5b..bfec3e2e75 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4423,7 +4423,7 @@
                 {
                     "label": "Small Layer Printing Temperature",
                     "description": "When reducing print speeds because of the minimum layer time, the printing temperature is gradually reduced to this temperature.",
-                    "unit": "°C",
+                    "unit": "\u00b0C",
                     "type": "float",
                     "value": "material_print_temperature",
                     "minimum_value": "material_final_print_temperature",