diff --git a/core/src/main/groovy/com/muwire/core/MuWireSettings.groovy b/core/src/main/groovy/com/muwire/core/MuWireSettings.groovy
index 009ca09f..1f1649d4 100644
--- a/core/src/main/groovy/com/muwire/core/MuWireSettings.groovy
+++ b/core/src/main/groovy/com/muwire/core/MuWireSettings.groovy
@@ -157,7 +157,7 @@ class MuWireSettings {
         allowMessages = Boolean.valueOf(props.getProperty("allowMessages","true"))
         allowOnlyTrustedMessages = Boolean.valueOf(props.getProperty("allowOnlyTrustedMessages","false"))
         
-        ignoredFileTypes = DataUtil.readEncodedSet(props, "ignoredFileTypes")
+        ignoredFileTypes = DataUtil.readEncodedSet(props, "ignoredFileTypes", "part,az!,ut!,!qb")
         watchedDirectories = DataUtil.readEncodedSet(props, "watchedDirectories")
         watchedKeywords = DataUtil.readEncodedSet(props, "watchedKeywords")
         watchedRegexes = DataUtil.readEncodedSet(props, "watchedRegexes")
diff --git a/core/src/main/java/com/muwire/core/util/DataUtil.java b/core/src/main/java/com/muwire/core/util/DataUtil.java
index 2a5799b2..2d0ebbad 100644
--- a/core/src/main/java/com/muwire/core/util/DataUtil.java
+++ b/core/src/main/java/com/muwire/core/util/DataUtil.java
@@ -190,17 +190,24 @@ public class DataUtil {
     }
     
     public static Set<String> readEncodedSet(Properties props, String property) {
+        return readEncodedSet(props, property, null);
+    }
+
+    public static Set<String> readEncodedSet(Properties props, String property, String defaults) {
         Set<String> rv = new ConcurrentHashSet<>();
         if (props.containsKey(property)) {
-            String [] encoded = props.getProperty(property).split(",");
-            for(String s : encoded)
+            String[] encoded = props.getProperty(property).split(",");
+            for (String s : encoded)
                 rv.add(readi18nString(Base64.decode(s)));
+        } else if (defaults != null) {
+            for (String s : defaults.split(","))
+                rv.add(s);
         }
         return rv;
     }
     
     public static void writeEncodedSet(Set<String> set, String property, Properties props) {
-        if (set.isEmpty())
+        if (set.isEmpty()) 
             return;
         String encoded = set.stream().map(s -> Base64.encode(encodei18nString(s)))
                 .collect(Collectors.joining(","));
diff --git a/gui/griffon-app/i18n/messages.properties b/gui/griffon-app/i18n/messages.properties
index 08d64211..0cb81a84 100644
--- a/gui/griffon-app/i18n/messages.properties
+++ b/gui/griffon-app/i18n/messages.properties
@@ -297,7 +297,7 @@ OPTIONS_SHARING_SETTINGS=Sharing Settings
 OPTIONS_SHARE_DOWNLOADED_FILES=Share downloaded files
 OPTIONS_SHARE_HIDDEN_FILES=Share hidden files
 OPTIONS_HASHING_CORES=CPU Cores to use when hashing
-OPTIONS_IGNORED_FILE_TYPES=File types to not share (comma-separated)
+OPTIONS_IGNORED_FILE_TYPES=File types to not share
 OPTIONS_UPDATE_SETTINGS=Update Settings
 OPTIONS_CHECK_FOR_UPDATES=Check for updates every (hours)
 OPTIONS_DOWNLOAD_UPDATES=Download updates automatically