diff --git a/app/build.gradle b/app/build.gradle
index 3e3bc000c..572ac4a1a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -37,7 +37,7 @@ android {
 }
 
 dependencies {
-    compile 'com.simplemobiletools:commons:2.25.0'
+    compile 'com.simplemobiletools:commons:2.25.1'
     compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.6.0'
     compile 'com.theartofdev.edmodo:android-image-cropper:2.4.0'
     compile 'com.bignerdranch.android:recyclerview-multiselect:0.2'
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/models/Directory.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/models/Directory.kt
index 77cd94602..6293eba76 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/models/Directory.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/models/Directory.kt
@@ -1,9 +1,6 @@
 package com.simplemobiletools.gallery.models
 
-import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
-import com.simplemobiletools.commons.helpers.SORT_BY_NAME
-import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
-import com.simplemobiletools.commons.helpers.SORT_DESCENDING
+import com.simplemobiletools.commons.helpers.*
 import java.io.Serializable
 
 data class Directory(val path: String, val tmb: String, val name: String, var mediaCnt: Int, val modified: Long, val taken: Long,
@@ -20,7 +17,7 @@ data class Directory(val path: String, val tmb: String, val name: String, var me
     override fun compareTo(other: Directory): Int {
         var result: Int
         if (sorting and SORT_BY_NAME != 0) {
-            result = name.toLowerCase().compareTo(other.name.toLowerCase())
+            result = AlphanumComparator().compare(name.toLowerCase(), other.name.toLowerCase())
         } else if (sorting and SORT_BY_SIZE != 0) {
             result = if (size == other.size)
                 0
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/models/Medium.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/models/Medium.kt
index 0fb1aa59a..1663c60b1 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/models/Medium.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/models/Medium.kt
@@ -3,10 +3,7 @@ package com.simplemobiletools.gallery.models
 import com.simplemobiletools.commons.extensions.getMimeType
 import com.simplemobiletools.commons.extensions.isGif
 import com.simplemobiletools.commons.extensions.isPng
-import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
-import com.simplemobiletools.commons.helpers.SORT_BY_NAME
-import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
-import com.simplemobiletools.commons.helpers.SORT_DESCENDING
+import com.simplemobiletools.commons.helpers.*
 import java.io.File
 import java.io.Serializable
 
@@ -27,25 +24,25 @@ data class Medium(var name: String, var path: String, val video: Boolean, val mo
     fun getMimeType() = File(path).getMimeType()
 
     override fun compareTo(other: Medium): Int {
-        var res: Int
+        var result: Int
         if (sorting and SORT_BY_NAME != 0) {
-            res = name.toLowerCase().compareTo(other.name.toLowerCase())
+            result = AlphanumComparator().compare(name.toLowerCase(), other.name.toLowerCase())
         } else if (sorting and SORT_BY_SIZE != 0) {
-            res = if (size == other.size)
+            result = if (size == other.size)
                 0
             else if (size > other.size)
                 1
             else
                 -1
         } else if (sorting and SORT_BY_DATE_MODIFIED != 0) {
-            res = if (modified == other.modified)
+            result = if (modified == other.modified)
                 0
             else if (modified > other.modified)
                 1
             else
                 -1
         } else {
-            res = if (taken == other.taken)
+            result = if (taken == other.taken)
                 0
             else if (taken > other.taken)
                 1
@@ -54,8 +51,8 @@ data class Medium(var name: String, var path: String, val video: Boolean, val mo
         }
 
         if (sorting and SORT_DESCENDING != 0) {
-            res *= -1
+            result *= -1
         }
-        return res
+        return result
     }
 }