diff --git a/ff_derive/Cargo.toml b/ff_derive/Cargo.toml
index 68f5fe2..462a9b2 100644
--- a/ff_derive/Cargo.toml
+++ b/ff_derive/Cargo.toml
@@ -27,7 +27,6 @@ num-integer = "0.1"
 proc-macro2 = "1"
 quote = "1"
 syn = { version = "1", features = ["full"] }
-cfg-if = "1"
 
 [badges]
 maintenance = { status = "passively-maintained" }
diff --git a/ff_derive/src/lib.rs b/ff_derive/src/lib.rs
index 5e7ebb6..df232bd 100644
--- a/ff_derive/src/lib.rs
+++ b/ff_derive/src/lib.rs
@@ -916,30 +916,28 @@ fn prime_field_impl(
     let from_repr_impl = endianness.from_repr(name, limbs);
     let to_repr_impl = endianness.to_repr(quote! {#repr}, &mont_reduce_self_params, limbs);
 
-    cfg_if::cfg_if! {
-        if #[cfg(feature = "bits")] {
-            let to_le_bits_impl = ReprEndianness::Little.to_repr(
-                quote! {::ff::derive::bitvec::array::BitArray::new},
-                &mont_reduce_self_params,
-                limbs,
-            );
+    let prime_field_bits_impl = if cfg!(feature = "bits") {
+        let to_le_bits_impl = ReprEndianness::Little.to_repr(
+            quote! {::ff::derive::bitvec::array::BitArray::new},
+            &mont_reduce_self_params,
+            limbs,
+        );
 
-            let prime_field_bits_impl = quote! {
-                impl ::ff::PrimeFieldBits for #name {
-                    type ReprBits = REPR_BITS;
+        Some(quote! {
+            impl ::ff::PrimeFieldBits for #name {
+                type ReprBits = REPR_BITS;
 
-                    fn to_le_bits(&self) -> ::ff::FieldBits<REPR_BITS> {
-                        #to_le_bits_impl
-                    }
+                fn to_le_bits(&self) -> ::ff::FieldBits<REPR_BITS> {
+                    #to_le_bits_impl
+                }
 
-                    fn char_le_bits() -> ::ff::FieldBits<REPR_BITS> {
-                        ::ff::FieldBits::new(MODULUS)
-                    }
+                fn char_le_bits() -> ::ff::FieldBits<REPR_BITS> {
+                    ::ff::FieldBits::new(MODULUS)
                 }
-            };
-        } else {
-            let prime_field_bits_impl = quote! {};
-        }
+            }
+        })
+    } else {
+        None
     };
 
     let top_limb_index = limbs - 1;