diff --git a/src/paraswap_plugin.c b/src/paraswap_plugin.c
index dbba318..8c58c2a 100644
--- a/src/paraswap_plugin.c
+++ b/src/paraswap_plugin.c
@@ -45,7 +45,7 @@ const uint8_t NULL_ETH_ADDRESS[ADDRESS_LENGTH] = {0x00, 0x00, 0x00, 0x00, 0x00,
 static void handle_init_contract(void *parameters) {
     ethPluginInitContract_t *msg = (ethPluginInitContract_t *) parameters;
 
-    if (msg->interfaceVersion != ETH_PLUGIN_INTERFACE_VERSION_1) {
+    if (msg->interfaceVersion != ETH_PLUGIN_INTERFACE_VERSION_LATEST) {
         msg->result = ETH_PLUGIN_RESULT_UNAVAILABLE;
         return;
     }