diff --git a/core/src/main/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesser.java b/core/src/main/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesser.java
index 35d77ae4a..2ff9d8848 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesser.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesser.java
@@ -28,7 +28,7 @@ public class FeedItemDuplicateGuesser {
         return titlesLookSimilar(item1, item2)
                 && datesLookSimilar(item1, item2)
                 && durationsLookSimilar(media1, media2)
-                && TextUtils.equals(media1.getMime_type(), media2.getMime_type());
+                && mimeTypeLooksSimilar(media1, media2);
     }
 
     private static boolean sameAndNotEmpty(String string1, String string2) {
@@ -52,6 +52,19 @@ public class FeedItemDuplicateGuesser {
         return Math.abs(media1.getDuration() - media2.getDuration()) < 10 * 60L * 1000L;
     }
 
+    private static boolean mimeTypeLooksSimilar(FeedMedia media1, FeedMedia media2) {
+        String mimeType1 = media1.getMime_type();
+        String mimeType2 = media2.getMime_type();
+        if (mimeType1 == null || mimeType2 == null) {
+            return true;
+        }
+        if (mimeType1.contains("/") && mimeType2.contains("/")) {
+            mimeType1 = mimeType1.substring(0, mimeType1.indexOf("/"));
+            mimeType2 = mimeType2.substring(0, mimeType2.indexOf("/"));
+        }
+        return TextUtils.equals(mimeType1, mimeType2);
+    }
+
     private static boolean titlesLookSimilar(FeedItem item1, FeedItem item2) {
         return sameAndNotEmpty(canonicalizeTitle(item1.getTitle()), canonicalizeTitle(item2.getTitle()));
     }
diff --git a/core/src/test/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesserTest.java b/core/src/test/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesserTest.java
index ac7cdee1f..f3c993066 100644
--- a/core/src/test/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesserTest.java
+++ b/core/src/test/java/de/danoeh/antennapod/core/storage/FeedItemDuplicateGuesserTest.java
@@ -44,6 +44,9 @@ public class FeedItemDuplicateGuesserTest {
         assertFalse(FeedItemDuplicateGuesser.seemDuplicates(
                 item("id1", "Title", "example.com/episode1", 10, 5 * MINUTES, "audio/*"),
                 item("id2", "Title", "example.com/episode2", 10, 5 * MINUTES, "video/*")));
+        assertTrue(FeedItemDuplicateGuesser.seemDuplicates(
+                item("id1", "Title", "example.com/episode1", 10, 5 * MINUTES, "audio/mpeg"),
+                item("id2", "Title", "example.com/episode2", 10, 5 * MINUTES, "audio/mp3")));
         assertFalse(FeedItemDuplicateGuesser.seemDuplicates(
                 item("id1", "Title", "example.com/episode1", 5 * DAYS, 5 * MINUTES, "audio/*"),
                 item("id2", "Title", "example.com/episode2", 2 * DAYS, 5 * MINUTES, "audio/*")));