diff --git a/src/lib.rs b/src/lib.rs
index ad933bd..fb997f1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,4 +3,4 @@ pub mod nifs;
 pub mod plonk;
 pub mod poseidon;
 pub mod primary;
-// pub mod secondary;
+pub mod secondary;
diff --git a/src/primary/bn254_curve.rs b/src/primary/bn254_curve.rs
index e69de29..57d2a40 100644
--- a/src/primary/bn254_curve.rs
+++ b/src/primary/bn254_curve.rs
@@ -0,0 +1 @@
+// bn254 curve implementaion for PCS
diff --git a/src/secondary/grumpkin_curve.rs b/src/secondary/grumpkin_curve.rs
index e69de29..5859dfa 100644
--- a/src/secondary/grumpkin_curve.rs
+++ b/src/secondary/grumpkin_curve.rs
@@ -0,0 +1 @@
+// grumpkin curve implementaion for PCS