diff --git a/vector/build.gradle b/vector/build.gradle
index 1eac3106ea..b49cd14b77 100644
--- a/vector/build.gradle
+++ b/vector/build.gradle
@@ -192,8 +192,14 @@ android {
             resValue "bool", "debug_mode", "false"
             buildConfigField "boolean", "LOW_PRIVACY_LOG_ENABLE", "false"
 
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+
+            postprocessing {
+                removeUnusedCode true
+                removeUnusedResources true
+                obfuscate false
+                optimizeCode true
+                proguardFiles 'proguard-rules.pro'
+            }
         }
     }
 
diff --git a/vector/proguard-rules.pro b/vector/proguard-rules.pro
index f1b424510d..56d3b95510 100644
--- a/vector/proguard-rules.pro
+++ b/vector/proguard-rules.pro
@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class im.vector.riotx.features.** { *; }
\ No newline at end of file
diff --git a/vector/src/main/java/im/vector/riotx/features/rageshake/VectorFileLogger.kt b/vector/src/main/java/im/vector/riotx/features/rageshake/VectorFileLogger.kt
index bcc48fb96c..d4ad4efb6f 100644
--- a/vector/src/main/java/im/vector/riotx/features/rageshake/VectorFileLogger.kt
+++ b/vector/src/main/java/im/vector/riotx/features/rageshake/VectorFileLogger.kt
@@ -39,7 +39,7 @@ private const val SIZE_20MB = 20 * 1024 * 1024
 private const val SIZE_50MB = 50 * 1024 * 1024
 
 @Singleton
-class VectorFileLogger @Inject constructor(val context: Context, private val vectorPreferences: VectorPreferences) : Timber.DebugTree() {
+class VectorFileLogger @Inject constructor(val context: Context, private val vectorPreferences: VectorPreferences) : Timber.Tree() {
 
     private val maxLogSizeByte: Int
     private val logRotationCount: Int