diff --git a/.gitmodules b/.gitmodules
index 6554ec8c1..e69de29bb 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "jni/deltachat-core-rust"]
-	path = jni/deltachat-core-rust
-	url = https://github.com/deltachat/deltachat-core-rust
diff --git a/jni/dc_wrapper.c b/jni/dc_wrapper.c
index ec2268072..e2753cdca 100644
--- a/jni/dc_wrapper.c
+++ b/jni/dc_wrapper.c
@@ -256,12 +256,6 @@ JNIEXPORT void Java_com_b44t_messenger_DcContext_stopIo(JNIEnv *env, jobject obj
 }
 
 
-JNIEXPORT jboolean Java_com_b44t_messenger_DcContext_isIoRunning(JNIEnv *env, jobject obj)
-{
-    return dc_is_io_running(get_dc_context(env, obj)) != 0;
-}
-
-
 JNIEXPORT void Java_com_b44t_messenger_DcContext_maybeNetwork(JNIEnv *env, jobject obj)
 {
     dc_maybe_network(get_dc_context(env, obj));
diff --git a/jni/deltachat-core-rust b/jni/deltachat-core-rust
deleted file mode 160000
index c55bdf889..000000000
--- a/jni/deltachat-core-rust
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c55bdf88951e2596513abac175bfc773c2d6e002
diff --git a/res/values-tr/strings.xml b/res/values-tr/strings.xml
index 217d823af..6ce535437 100644
--- a/res/values-tr/strings.xml
+++ b/res/values-tr/strings.xml
@@ -413,8 +413,8 @@
     <!-- share and forward messages -->
     <!-- Translators: Title shown above a chat/contact list; the user selects the recipient of the messages he wants to forward to -->
     <string name="forward_to">İlet…</string>
-    <string name="share_multiple_attachments">%1$d dosya seçilen sohbete gönderilsin mi?\n\nDosyalar, değiştirilmeden özgün boyutlarında gönderilir; örn. görseller ve videolar yeniden kodlanmaz.</string>
-    <string name="share_multiple_attachments_multiple_chats">%1$d dosya %2$d sohbete gönderilsin mi?\n\nDosyalar, değiştirilmeden özgün boyutlarında gönderilir; örn. görseller ve videolar yeniden kodlanmaz.</string>
+    <string name="share_multiple_attachments">%1$d dosya seçilen sohbete gönderilsin mi?\n\nDosyalar, değiştirilmeden özgün boyutlarında gönderilir; ör. görseller ve videolar yeniden kodlanmaz.</string>
+    <string name="share_multiple_attachments_multiple_chats">%1$d dosya %2$d sohbete gönderilsin mi?\n\nDosyalar, değiştirilmeden özgün boyutlarında gönderilir; ör. görseller ve videolar yeniden kodlanmaz.</string>
     <string name="share_text_multiple_chats">Bu metin %1$d sohbete gönderilsin mi?\n\n\"%2$s\"</string>
     <string name="share_abort">Eksik izinlerden dolayı paylaşımdan vazgeçildi.</string>
 
diff --git a/res/values-uk/strings.xml b/res/values-uk/strings.xml
index 18657f0f4..8068dc1fd 100644
--- a/res/values-uk/strings.xml
+++ b/res/values-uk/strings.xml
@@ -11,7 +11,7 @@
     <string name="off">Вимкн.</string>
     <string name="def">За замовчуванням</string>
     <string name="default_value">За замовчуванням (%1$s)</string>
-    <string name="default_value_as_above">За замовчуванням (так сам, як вказано вище)</string>
+    <string name="default_value_as_above">За замовчуванням (так само, як вказано вище)</string>
     <string name="custom">Персональне налаштування</string>
     <string name="none">Не задано</string>
     <string name="automatic">Автоматично</string>
diff --git a/src/com/b44t/messenger/DcContext.java b/src/com/b44t/messenger/DcContext.java
index dc687cea8..7a6998f58 100644
--- a/src/com/b44t/messenger/DcContext.java
+++ b/src/com/b44t/messenger/DcContext.java
@@ -101,7 +101,6 @@ public class DcContext {
 
     public native void         startIo              ();
     public native void         stopIo               ();
-    public native boolean      isIoRunning          ();
 
     public native void         maybeNetwork         ();
     public native void         setConfig            (String key, String value);