diff --git a/hw/misc/tmp105.c b/hw/misc/tmp105.c
index 0918f3a6ea..f6d7163273 100644
--- a/hw/misc/tmp105.c
+++ b/hw/misc/tmp105.c
@@ -79,7 +79,7 @@ static void tmp105_set_temperature(Object *obj, Visitor *v, const char *name,
         return;
     }
     if (temp >= 128000 || temp < -128000) {
-        error_setg(errp, "value %" PRId64 ".%03" PRIu64 " °C is out of range",
+        error_setg(errp, "value %" PRId64 ".%03" PRIu64 " C is out of range",
                    temp / 1000, temp % 1000);
         return;
     }
diff --git a/hw/misc/tmp421.c b/hw/misc/tmp421.c
index c234044305..eeb11000f0 100644
--- a/hw/misc/tmp421.c
+++ b/hw/misc/tmp421.c
@@ -153,7 +153,7 @@ static void tmp421_set_temperature(Object *obj, Visitor *v, const char *name,
     }
 
     if (temp >= maxs[ext_range] || temp < mins[ext_range]) {
-        error_setg(errp, "value %" PRId64 ".%03" PRIu64 " °C is out of range",
+        error_setg(errp, "value %" PRId64 ".%03" PRIu64 " C is out of range",
                    temp / 1000, temp % 1000);
         return;
     }