diff --git a/contracts/DAIInterestRateModelV4.sol b/contracts/DAIInterestRateModelV4.sol
index 6e1ff9457..2cf137dd4 100644
--- a/contracts/DAIInterestRateModelV4.sol
+++ b/contracts/DAIInterestRateModelV4.sol
@@ -82,8 +82,8 @@ contract DAIInterestRateModelV4 is JumpRateModelV2 {
      */
     function dsrPerBlock() public view returns (uint) {
         return (pot.dsr() - RAY_BASE) // scaled RAY_BASE aka RAY, and includes an extra "ONE" before subtraction
-            / RAY_TO_BASE_SCALE // descale to BASE
             * SECONDS_PER_BLOCK; // seconds per block
+            / RAY_TO_BASE_SCALE // descale to BASE
     }
 
     /**