diff --git a/pkg/urbit/jets/e/ed_scalarmult_base.c b/pkg/urbit/jets/e/ed_scalarmult_base.c
index bc3cda7f6..3bdbedaa1 100644
--- a/pkg/urbit/jets/e/ed_scalarmult_base.c
+++ b/pkg/urbit/jets/e/ed_scalarmult_base.c
@@ -2,35 +2,38 @@
 **
 */
 #include "all.h"
-
-#include <ed25519.h>
-#include <ge.h>
+#include <urcrypt.h>
 
 /* functions
 */
+  u3_noun
+  u3qc_scalarmult_base(u3_atom a)
+  {
+    c3_w met_w = u3r_met(3, a);
+
+    if ( met_w > 32 ) {
+      return u3_none;
+    }
+    else {
+      c3_y a_y[32], out_y[32];
+
+      memset(a_y, 0, 32);
+      u3r_bytes(0, met_w, a_y, a);
+
+      urcrypt_ed_scalarmult_base(a_y, out_y);
+      return u3i_bytes(32, out_y);
+    }
+  }
+
   u3_noun
   u3wee_scalarmult_base(u3_noun cor)
   {
-    u3_noun scalar = u3r_at(u3x_sam, cor);
+    u3_noun a = u3r_at(u3x_sam, cor);
 
-    if ( (u3_none == scalar) || (c3n == u3ud(scalar)) ) {
+    if ( (u3_none == a) || (c3n == u3ud(a)) ) {
       return u3m_bail(c3__exit);
     }
-
-    c3_w met_w = u3r_met(3, scalar);
-    if ( met_w > 32 ) {
-      return u3m_bail(c3__fail);
+    else {
+      return u3qc_scalarmult_base(a);
     }
-
-    c3_y scalar_y[32];
-    memset(scalar_y, 0, 32);
-    u3r_bytes(0, met_w, scalar_y, scalar);
-
-    ge_p3 R;
-    ge_scalarmult_base(&R, scalar_y);
-
-    c3_y output_y[32];
-    ge_p3_tobytes(output_y, &R);
-
-    return u3i_bytes(32, output_y);
   }
diff --git a/pkg/urcrypt/urcrypt.c b/pkg/urcrypt/urcrypt.c
index 96b455ce4..2539e7ee9 100644
--- a/pkg/urcrypt/urcrypt.c
+++ b/pkg/urcrypt/urcrypt.c
@@ -49,6 +49,14 @@ urcrypt_ed_scalarmult(uint8_t a[32], uint8_t b[32], uint8_t out[32])
   return 0;
 }
 
+void
+urcrypt_ed_scalarmult_base(uint8_t a[32], uint8_t out[32])
+{
+  ge_p3 R;
+  ge_scalarmult_base(&R, a);
+  ge_p3_tobytes(out, &R);
+}
+
 void
 urcrypt_ed_sign(uint8_t *message,
                 size_t length,
diff --git a/pkg/urcrypt/urcrypt.h b/pkg/urcrypt/urcrypt.h
index 1204cda38..d6019d684 100644
--- a/pkg/urcrypt/urcrypt.h
+++ b/pkg/urcrypt/urcrypt.h
@@ -8,6 +8,7 @@
 
 int urcrypt_ed_point_add(uint8_t a[32], uint8_t b[32], uint8_t out[32]);
 int urcrypt_ed_scalarmult(uint8_t a[32], uint8_t b[32], uint8_t out[32]);
+void urcrypt_ed_scalarmult_base(uint8_t a[32], uint8_t out[32]);
 void urcrypt_ed_sign(uint8_t *message,
                      size_t length,
                      uint8_t seed[32],