diff --git a/app/src/main/java/org/thoughtcrime/securesms/util/SqlUtil.java b/app/src/main/java/org/thoughtcrime/securesms/util/SqlUtil.java
index f2e280294c..71361d5b29 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/util/SqlUtil.java
+++ b/app/src/main/java/org/thoughtcrime/securesms/util/SqlUtil.java
@@ -18,6 +18,7 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
@@ -122,8 +123,14 @@ public final class SqlUtil {
 
     for (Map.Entry<String, Object> entry : valueSet) {
       if (entry.getValue() != null) {
-        qualifier.append(entry.getKey()).append(" != ? OR ").append(entry.getKey()).append(" IS NULL");
-        fullArgs.add(String.valueOf(entry.getValue()));
+        if (entry.getValue() instanceof byte[]) {
+          byte[] data = (byte[]) entry.getValue();
+          qualifier.append("hex(").append(entry.getKey()).append(") != ? OR ").append(entry.getKey()).append(" IS NULL");
+          fullArgs.add(Hex.toStringCondensed(data).toUpperCase(Locale.US));
+        } else {
+          qualifier.append(entry.getKey()).append(" != ? OR ").append(entry.getKey()).append(" IS NULL");
+          fullArgs.add(String.valueOf(entry.getValue()));
+        }
       } else {
         qualifier.append(entry.getKey()).append(" NOT NULL");
       }
diff --git a/app/src/test/java/org/thoughtcrime/securesms/util/SqlUtilTest.java b/app/src/test/java/org/thoughtcrime/securesms/util/SqlUtilTest.java
index c6b4b07812..0ccddc4c90 100644
--- a/app/src/test/java/org/thoughtcrime/securesms/util/SqlUtilTest.java
+++ b/app/src/test/java/org/thoughtcrime/securesms/util/SqlUtilTest.java
@@ -9,6 +9,7 @@ import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -97,6 +98,22 @@ public final class SqlUtilTest {
     assertArrayEquals(new String[] { "1", "2", "3" }, updateQuery.getWhereArgs());
   }
 
+  @Test
+  public void buildTrueUpdateQuery_blobComplex() {
+    String   selection = "_id = ?";
+    String[] args      = new String[]{"1"};
+
+    ContentValues values = new ContentValues();
+    values.put("a", hexToBytes("FF"));
+    values.put("b", 2);
+    values.putNull("c");
+
+    SqlUtil.Query updateQuery = SqlUtil.buildTrueUpdateQuery(selection, args, values);
+
+    assertEquals("(_id = ?) AND (hex(a) != ? OR a IS NULL OR b != ? OR b IS NULL OR c NOT NULL)", updateQuery.getWhere());
+    assertArrayEquals(new String[] { "1", "FF", "2" }, updateQuery.getWhereArgs());
+  }
+
   @Test
   public void buildCollectionQuery_single() {
     SqlUtil.Query updateQuery = SqlUtil.buildCollectionQuery("a", Arrays.asList(1));
@@ -255,4 +272,12 @@ public final class SqlUtilTest {
     assertEquals("INSERT INTO mytable (a, b) VALUES (?, ?)", output.get(1).getWhere());
     assertArrayEquals(new String[] { "5", "6" }, output.get(1).getWhereArgs());
   }
+
+  private static byte[] hexToBytes(String hex) {
+    try {
+      return Hex.fromStringCondensed(hex);
+    } catch (IOException e) {
+      throw new AssertionError(e);
+    }
+  }
 }