diff --git a/compiler/Makefile b/compiler/Makefile
index e366128d1..bcc1ceeee 100644
--- a/compiler/Makefile
+++ b/compiler/Makefile
@@ -6,7 +6,7 @@ CC_COMPILER=
 CXX_COMPILER=
 
 CONCRETE_OPTIMIZER_DIR ?= $(shell pwd)/.dependencies/concrete-optimizer
-CONCRETE_OPTIMIZER_BRANCH ?= master
+CONCRETE_OPTIMIZER_BRANCH ?= compat
 
 KEYSETCACHEDEV=/tmp/KeySetCache
 KEYSETCACHECI ?= ../KeySetCache