diff --git a/circuits/transaction.circom b/circuits/transaction.circom
index 27520f8..24f7c80 100644
--- a/circuits/transaction.circom
+++ b/circuits/transaction.circom
@@ -43,7 +43,6 @@ template Transaction(levels, nIns, nOuts, zeroLeaf) {
     component inKeypair[nIns];
     component inUtxoHasher[nIns];
     component nullifierHasher[nIns];
-    component inAmountCheck[nIns];
     component tree[nIns];
     component checkRoot[nIns];
     var sumIns = 0;
@@ -77,9 +76,9 @@ template Transaction(levels, nIns, nOuts, zeroLeaf) {
         checkRoot[tx].in[1] <== tree[tx].root;
         checkRoot[tx].enabled <== inAmount[tx];
 
-        // Check that amount fits into 248 bits to prevent overflow
-        inAmountCheck[tx] = Num2Bits(248);
-        inAmountCheck[tx].in <== inAmount[tx];
+        // We don't need to range check input amounts, since all inputs are valid UTXOs that 
+        // were already checked as outputs in the previous transaction (or zero amount UTXOs that don't 
+        // need to be checked either).
 
         sumIns += inAmount[tx];
     }