diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
index 04b42f3..8380ef7 100644
--- a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
@@ -220,7 +220,7 @@ bool EthEcatPdoFMMU::wait_op(std::vector<DataT, Allocator>& pdo_read, std::vecto
     pdo_write.reserve(logical_full_length_write/sizeof(DataT));
     pdo_write.resize(logical_full_length_write/sizeof(DataT), 0);
 
-    status = read(0, pdo_write); // read to pdo_write !
+    status = read(0, pdo_read); // read to pdo_write !
 
     if(status != true) {
         return status;