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 a559bb8..04b42f3 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
@@ -264,7 +264,7 @@ void EthEcatPdoFMMU::process(Allocator& allocator) {
     custom_tuple< std::vector<DataT, Allocator>& > data_tuple_read{pdo_read};
     custom_tuple< std::vector<DataT, Allocator>& > data_tuple_write{pdo_write};
 
-    status = read(0, pdo_write); // read to pdo_write !
+    status = read(0, pdo_read); // read to pdo_write !
 
     if(status != true) {
         return;