diff --git a/app/src/main/java/eu/faircode/email/Helper.java b/app/src/main/java/eu/faircode/email/Helper.java
index 11635b2c5d..f73a4a21be 100644
--- a/app/src/main/java/eu/faircode/email/Helper.java
+++ b/app/src/main/java/eu/faircode/email/Helper.java
@@ -2645,7 +2645,7 @@ public class Helper {
         parent.mkdir();
 
         File dir = new File(parent, subdir);
-        dir.mkdir();
+        Log.jni_safe_mkdirs(dir);
 
         synchronized (exists) {
             if (exists.containsKey(dir))
diff --git a/app/src/main/java/eu/faircode/email/Log.java b/app/src/main/java/eu/faircode/email/Log.java
index 9ff9fa20c3..d2775879d1 100644
--- a/app/src/main/java/eu/faircode/email/Log.java
+++ b/app/src/main/java/eu/faircode/email/Log.java
@@ -245,6 +245,8 @@ public class Log {
 
     public static native void jni_safe_write(OutputStream os, byte[] data);
 
+    public static native boolean jni_safe_mkdirs(File file);
+
     public static native long[] jni_safe_runtime_stats();
 
     public static void setLevel(Context context) {
@@ -403,7 +405,6 @@ public class Log {
         return t.toSafeString() + "\n" + t.getSafeStackTraceString();
     }
 
-
     public static void persist(EntityLog.Type type, String message) {
         if (ctx == null)
             Log.e(message);
@@ -1932,6 +1933,8 @@ public class Log {
             db.endTransaction();
         }
 
+        Log.jni_safe_mkdirs(new File(context.getFilesDir(), "testing"));
+
         ServiceSynchronize.eval(context, "debuginfo");
 
         return draft;
diff --git a/app/src/main/jni/fairemail.cc b/app/src/main/jni/fairemail.cc
index 25ab83d299..0e0b6884ea 100644
--- a/app/src/main/jni/fairemail.cc
+++ b/app/src/main/jni/fairemail.cc
@@ -74,6 +74,14 @@ Java_eu_faircode_email_Log_jni_1safe_1write(JNIEnv *env, jclass clazz,
     env->CallVoidMethod(os, mid, data);
 }
 
+extern "C"
+JNIEXPORT jboolean JNICALL
+Java_eu_faircode_email_Log_jni_1safe_1mkdirs(JNIEnv *env, jclass clazz, jobject file) {
+    jclass cls = env->FindClass("java/io/File");
+    jmethodID mid = env->GetMethodID(cls, "mkdirs", "()Z");
+    return (jboolean) env->CallBooleanMethod(file, mid);
+}
+
 extern "C"
 JNIEXPORT jlongArray JNICALL
 Java_eu_faircode_email_Log_jni_1safe_1runtime_1stats(JNIEnv *env, jclass clazz) {