diff --git a/src/jug.sol b/src/jug.sol
index 44a6d22a..d055fa44 100644
--- a/src/jug.sol
+++ b/src/jug.sol
@@ -53,7 +53,9 @@ contract Jug is DSNote {
                         x := div(xxRound, b)
                         if mod(n,2) {
                             let zx := mul(z, x)
-                            if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) { revert(0,0) }
+                            if iszero(iszero(x)) {
+                                if iszero(eq(div(zx, x), z)) { revert(0,0) }
+                            }
                             let zxRound := add(zx, half)
                             if lt(zxRound, zx) { revert(0,0) }
                             z := div(zxRound, b)
diff --git a/src/pot.sol b/src/pot.sol
index e8c31016..88b30c9b 100644
--- a/src/pot.sol
+++ b/src/pot.sol
@@ -91,7 +91,9 @@ contract Pot is DSNote {
                         x := div(xxRound, base)
                         if mod(n,2) {
                             let zx := mul(z, x)
-                            if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) { revert(0,0) }
+                            if iszero(iszero(x)) {
+                                if iszero(eq(div(zx, x), z)) { revert(0,0) }
+                            }
                             let zxRound := add(zx, half)
                             if lt(zxRound, zx) { revert(0,0) }
                             z := div(zxRound, base)