diff --git a/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonDeserializer.java b/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonDeserializer.java
index 1a001759d..807c575f0 100644
--- a/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonDeserializer.java
+++ b/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonDeserializer.java
@@ -22,8 +22,7 @@ public class MimeTypeJsonDeserializer extends JsonDeserializer<MimeType> {
         final JsonParser parser,
         final DeserializationContext ctxt
     ) throws IOException, JsonProcessingException {
-        final JsonNode node = parser.getCodec().readTree(parser);
-        final String value = node.get("mimeType").asText();
+        final String value = parser.getText();
         try {
             return new MimeType(value);
         } catch (MimeTypeParseException ex) {
diff --git a/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonSerializer.java b/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonSerializer.java
index 9e99915d5..81e588d06 100644
--- a/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonSerializer.java
+++ b/ccm-core/src/main/java/org/libreccm/ui/admin/imexport/MimeTypeJsonSerializer.java
@@ -20,9 +20,7 @@ public class MimeTypeJsonSerializer extends JsonSerializer<MimeType> {
         final JsonGenerator generator,
         final SerializerProvider serializers
     ) throws IOException {
-        generator.writeStartObject();
         generator.writeStringField("mimeType", value.toString());
-        generator.writeEndObject();
     }
 
 }