diff --git a/src/script/miniscript.cpp b/src/script/miniscript.cpp
index 45aebe909a..12d57f62be 100644
--- a/src/script/miniscript.cpp
+++ b/src/script/miniscript.cpp
@@ -172,8 +172,8 @@ Type ComputeType(Fragment fragment, Type x, Type y, Type z, const std::vector<Ty
             (y & "B"_mst).If(x << "Bdu"_mst) | // B=B_y*B_x*d_x*u_x
             (x & "o"_mst).If(y << "z"_mst) | // o=o_x*z_y
             (x & y & "m"_mst).If(x << "e"_mst && (x | y) << "s"_mst) | // m=m_x*m_y*e_x*(s_x+s_y)
-            (x & y & "zes"_mst) | // z=z_x*z_y, e=e_x*e_y, s=s_x*s_y
-            (y & "ufd"_mst) | // u=u_y, f=f_y, d=d_y
+            (x & y & "zs"_mst) | // z=z_x*z_y, s=s_x*s_y
+            (y & "ufde"_mst) | // u=u_y, f=f_y, d=d_y, e=e_y
             "x"_mst | // x
             ((x | y) & "ghij"_mst) | // g=g_x+g_y, h=h_x+h_y, i=i_x+i_y, j=j_x+j_y
             (x & y & "k"_mst); // k=k_x*k_y
@@ -201,7 +201,7 @@ Type ComputeType(Fragment fragment, Type x, Type y, Type z, const std::vector<Ty
             (y & z & "u"_mst) | // u=u_y*u_z
             (z & "f"_mst).If((x << "s"_mst) || (y << "f"_mst)) | // f=(s_x+f_y)*f_z
             (z & "d"_mst) | // d=d_z
-            (x & z & "e"_mst).If(x << "s"_mst || y << "f"_mst) | // e=e_x*e_z*(s_x+f_y)
+            (z & "e"_mst).If(x << "s"_mst || y << "f"_mst) | // e=e_z*(s_x+f_y)
             (x & y & z & "m"_mst).If(x << "e"_mst && (x | y | z) << "s"_mst) | // m=m_x*m_y*m_z*e_x*(s_x+s_y+s_z)
             (z & (x | y) & "s"_mst) | // s=s_z*(s_x+s_y)
             "x"_mst | // x
diff --git a/src/script/miniscript.h b/src/script/miniscript.h
index 80d98f5e66..a3eef7f932 100644
--- a/src/script/miniscript.h
+++ b/src/script/miniscript.h
@@ -1050,9 +1050,9 @@ private:
             if (node.GetType() << "f"_mst && ret.nsat.available != Availability::NO) assert(ret.nsat.has_sig);
             if (node.GetType() << "s"_mst && ret.sat.available != Availability::NO) assert(ret.sat.has_sig);
 
-            // For 'e' nodes, a non-malleable dissatisfaction must exist.
-            if (node.GetType() << "e"_mst) assert(ret.nsat.available != Availability::NO);
-            if (node.GetType() << "e"_mst) assert(!ret.nsat.malleable);
+            // For non-malleable 'e' nodes, a non-malleable dissatisfaction must exist.
+            if (node.GetType() << "me"_mst) assert(ret.nsat.available != Availability::NO);
+            if (node.GetType() << "me"_mst) assert(!ret.nsat.malleable);
 
             // For 'm' nodes, if a satisfaction exists, it must be non-malleable.
             if (node.GetType() << "m"_mst && ret.sat.available != Availability::NO) assert(!ret.sat.malleable);