diff --git a/remix-solidity/src/compiler/compiler.js b/remix-solidity/src/compiler/compiler.js
index b0815ea1f5..794e80f2de 100644
--- a/remix-solidity/src/compiler/compiler.js
+++ b/remix-solidity/src/compiler/compiler.js
@@ -370,11 +370,13 @@ function Compiler (handleImportCall) {
     }
     return version
   }
-
+  
   function updateInterface (data) {
     txHelper.visitContracts(data.contracts, (contract) => {
       if (!contract.object.abi) contract.object.abi = []
       if (language === 'Yul' && contract.object.abi.length === 0) {
+        // yul compiler does not return any abi,
+        // we default to accept the fallback function (which expect raw data as argument).
         contract.object.abi.push({
           'payablepayable': true,
           'stateMutability': 'payable',