diff --git a/flow/designs/gf12/ariane/config.mk b/flow/designs/gf12/ariane/config.mk
index 30719be1a8..ba59619ad2 100644
--- a/flow/designs/gf12/ariane/config.mk
+++ b/flow/designs/gf12/ariane/config.mk
@@ -33,7 +33,5 @@ else
 export DESIGN_TYPE = CELL_NODEN
 endif
 
-export REMOVE_ABC_BUFFERS = 1
-
 export SWAP_ARITH_OPERATORS = 1
 export OPENROAD_HIERARCHICAL = 1
diff --git a/flow/designs/gf12/ariane133/config.mk b/flow/designs/gf12/ariane133/config.mk
index eca0992ea1..712efe145f 100644
--- a/flow/designs/gf12/ariane133/config.mk
+++ b/flow/designs/gf12/ariane133/config.mk
@@ -29,5 +29,3 @@ export DESIGN_TYPE = CELL
 else
 export DESIGN_TYPE = CELL_NODEN
 endif
-
-export REMOVE_ABC_BUFFERS = 1
diff --git a/flow/designs/gf12/swerv_wrapper/config.mk b/flow/designs/gf12/swerv_wrapper/config.mk
index 1639fa96e2..4941d18bd0 100644
--- a/flow/designs/gf12/swerv_wrapper/config.mk
+++ b/flow/designs/gf12/swerv_wrapper/config.mk
@@ -35,5 +35,3 @@ export DESIGN_TYPE = CELL
 else
 export DESIGN_TYPE = CELL_NODEN
 endif
-
-export REMOVE_ABC_BUFFERS = 1