diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 8d199e11a..faa9c2587 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -20,6 +20,10 @@
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
 
+# Disable code shrinking and optimization
+-dontshrink
+-dontoptimize
+
 # Needed for protobufs
 -keepclassmembers class * extends com.google.protobuf.GeneratedMessage { <fields>; }
 -keep class com.geeksville.mesh.**{*;}