diff --git a/abi.js b/abi.js
index 27f4455..f41d0cb 100644
--- a/abi.js
+++ b/abi.js
@@ -41,7 +41,14 @@ export async function getAbi(className) {
     let found = abi[className]
     if (found === undefined) {
         console.log('warning: loading ABI from filesystem for '+className)
-        const data = await readFile(ABI_BASE_PATH + `/${className}.sol/${className}.json`)
+        // const data = await readFile(ABI_BASE_PATH + `/${className}.sol/${className}.json`)
+        let data
+        try {
+            data = await readFile(ABI_BASE_PATH + `/I${className}.sol/I${className}.json`)
+        }
+        catch (e) {
+            data = await readFile(ABI_BASE_PATH + `/${className}.sol/${className}.json`)
+        }
         found = JSON.parse(data.toString())['abi']
         abi[className] = found
     }