diff --git a/_data/iconsDownload/bafybeideqgs54hqx23deytbf4ljbjxgt7tyqkr5b6o5y2yglwjjjf6c4uq b/_data/iconsDownload/bafybeideqgs54hqx23deytbf4ljbjxgt7tyqkr5b6o5y2yglwjjjf6c4uq
deleted file mode 100644
index 931b13fc..00000000
Binary files a/_data/iconsDownload/bafybeideqgs54hqx23deytbf4ljbjxgt7tyqkr5b6o5y2yglwjjjf6c4uq and /dev/null differ
diff --git a/processor/src/main/kotlin/org/ethereum/lists/chains/Main.kt b/processor/src/main/kotlin/org/ethereum/lists/chains/Main.kt
index a7cefa2e..82c83d9e 100644
--- a/processor/src/main/kotlin/org/ethereum/lists/chains/Main.kt
+++ b/processor/src/main/kotlin/org/ethereum/lists/chains/Main.kt
@@ -4,15 +4,10 @@ import com.beust.klaxon.JsonArray
 import java.io.File
 import com.beust.klaxon.JsonObject
 import com.beust.klaxon.Klaxon
-import com.squareup.moshi.Moshi
-import io.ipfs.kotlin.IPFS
-import io.ipfs.kotlin.IPFSConfiguration
-import okhttp3.OkHttpClient
 import org.ethereum.lists.chains.model.*
 import org.kethereum.erc55.isValid
 import org.kethereum.model.Address
 import org.kethereum.rpc.HttpEthereumRPC
-import java.time.Duration
 import kotlin.io.OnErrorAction.*
 
 val parsedShortNames = mutableSetOf<String>()
@@ -97,8 +92,13 @@ private fun doChecks(doRPCConnect: Boolean, doIconDownload: Boolean) {
     }
 
     val allIcons = iconsPath.listFiles() ?: return
+    val allIconCIDs = mutableSetOf<String>()
     allIcons.forEach {
-        checkIcon(it, doIconDownload)
+        checkIcon(it, doIconDownload, allIconCIDs)
+    }
+
+    iconsDownloadPath.listFiles().forEach {
+        if (!allIconCIDs.contains(it.name)) throw UnreferencedIcon(it.name, iconsDownloadPath)
     }
 
     allFiles.filter { it.isDirectory }.forEach { _ ->
@@ -106,7 +106,7 @@ private fun doChecks(doRPCConnect: Boolean, doIconDownload: Boolean) {
     }
 }
 
-fun checkIcon(icon: File, withIconDownload: Boolean) {
+fun checkIcon(icon: File, withIconDownload: Boolean, allIconCIDs: MutableSet<String>) {
     println("checking Icon " + icon.name)
     val obj: JsonArray<*> = Klaxon().parseJsonArray(icon.reader())
     println("found variants " + obj.size)
@@ -121,6 +121,8 @@ fun checkIcon(icon: File, withIconDownload: Boolean) {
             error("url must start with ipfs://")
         }
 
+        allIconCIDs.add(url.removePrefix("ipfs://"))
+
         if (withIconDownload) {
 
 
@@ -329,7 +331,7 @@ fun checkChain(chainFile: File, connectRPC: Boolean) {
     }
 }
 
-fun String.normalizeName() = replace(" ","").uppercase()
+fun String.normalizeName() = replace(" ", "").uppercase()
 
 /*
 moshi fails for extra commas
@@ -359,6 +361,6 @@ private fun getNumber(jsonObject: JsonObject, field: String): Long {
     return when (val chainId = jsonObject[field]) {
         is Int -> chainId.toLong()
         is Long -> chainId
-        else -> throw(Exception("not a number at $field"))
+        else -> throw (Exception("not a number at $field"))
     }
 }
\ No newline at end of file
diff --git a/processor/src/main/kotlin/org/ethereum/lists/chains/model/Exceptions.kt b/processor/src/main/kotlin/org/ethereum/lists/chains/model/Exceptions.kt
index 92633ccf..f8503500 100644
--- a/processor/src/main/kotlin/org/ethereum/lists/chains/model/Exceptions.kt
+++ b/processor/src/main/kotlin/org/ethereum/lists/chains/model/Exceptions.kt
@@ -1,5 +1,7 @@
 package org.ethereum.lists.chains.model
 
+import java.io.File
+
 class FileNameMustMatchChainId : Exception("chainId must match the filename")
 class ExtensionMustBeJSON : Exception("filename extension must be json")
 class ShouldHaveNoExtraFields(fields: Set<String>) : Exception("should have no extra field $fields")
@@ -33,4 +35,6 @@ class NativeCurrencySymbolMustBeString: Exception("Native currency symbol must b
 class NativeCurrencySymbolMustHaveLessThan7Chars: Exception("Native currency symbol must have less than 7 chars")
 class NativeCurrencyCanOnlyHaveSymbolNameAndDecimals: Exception("Native currency can only have symbol decimals and name")
 class NativeCurrencyDecimalMustBeInt: Exception("Native currency decimals must be int")
-class NativeCurrencyNameMustBeString: Exception("Native currency name must be string")
\ No newline at end of file
+class NativeCurrencyNameMustBeString: Exception("Native currency name must be string")
+
+class UnreferencedIcon(fileName: String, iconsDownloadPath: File): Exception("Found file $fileName in $iconsDownloadPath that is not referenced")
\ No newline at end of file