diff --git a/gateway/src/nativeMain/kotlin/Inflater.kt b/gateway/src/nativeMain/kotlin/Inflater.kt
index 4fbca05c13c..63bfa922edc 100644
--- a/gateway/src/nativeMain/kotlin/Inflater.kt
+++ b/gateway/src/nativeMain/kotlin/Inflater.kt
@@ -38,7 +38,7 @@ internal actual class Inflater : Closeable {
                 if (resultCode != Z_OK && resultCode != Z_STREAM_END) {
                     throw IllegalStateException("An error occurred during decompression of frame: $resultCode")
                 }
-                out += uncompressedData.readBytes(uncompressedDataSize - zStream.avail_out.toInt())
+                out += uncompressedData.readBytes(uncompressedDataSize - zStream.avail_out.convert<Int>())
             } while (zStream.avail_out == 0u)
         }