diff --git a/cmake_targets/CMakeLists.txt b/cmake_targets/CMakeLists.txt
index b36beb035f419c5300dcc060a09cf6992565ea7d..f1e3837d67456504a01b7de46da679e53bc761f7 100644
--- a/cmake_targets/CMakeLists.txt
+++ b/cmake_targets/CMakeLists.txt
@@ -613,7 +613,6 @@ add_boolean_option(ENB_MODE True "Swap the include directories between openair2
 add_boolean_option(ENABLE_USE_CPU_EXECUTION_TIME True "Add data in vcd traces: disable it if perf issues")
 add_boolean_option(ENABLE_VCD              True  "always true now, time measurements of proc calls and var displays")
 add_boolean_option(ENABLE_VCD_FIFO         True  "time measurements of proc calls and var displays sent to FIFO (one more thread)")
-add_boolean_option(HARD_RT                 False "???")
 add_boolean_option(LINUX                   False "used in weird memcpy() in pdcp.c ???")
 add_boolean_option(LINUX_LIST              False "used only in lists.c: either use OAI implementation of lists or Linux one (should be True, but it is False")
 add_boolean_option(LOG_NO_THREAD           True  "Disable thread for log, seems always set to true")
diff --git a/cmake_targets/epc_test/CMakeLists.template b/cmake_targets/epc_test/CMakeLists.template
index 35d478828bb8305800ad6b4528dd11df614e88cf..52016d13916b6271a63ac178c507fdbd681181c5 100644
--- a/cmake_targets/epc_test/CMakeLists.template
+++ b/cmake_targets/epc_test/CMakeLists.template
@@ -17,7 +17,6 @@ set (  ENABLE_USE_RAW_SOCKET_FOR_SGI True)
 set (  ENABLE_VCD_FIFO False )
 set (  ENB_MODE True )
 set (  EXMIMO_IOT True )
-set (  HARD_RT False )
 set (  JUMBO_FRAME True )
 set (  LARGE_SCALE False )
 set (  LINK_ENB_PDCP_TO_GTPV1U True)
diff --git a/cmake_targets/oaisim_build_oai/CMakeLists.template b/cmake_targets/oaisim_build_oai/CMakeLists.template
index 20863eeab5d56c15a9402ca69a601ff9c74daaab..68fe8b0f1c58759bf81e684cd1ab64b274b77b7c 100644
--- a/cmake_targets/oaisim_build_oai/CMakeLists.template
+++ b/cmake_targets/oaisim_build_oai/CMakeLists.template
@@ -16,7 +16,6 @@ set (  ENABLE_USE_RAW_SOCKET_FOR_SGI True)
 set (  ENABLE_VCD_FIFO False )
 set (  ENB_MODE True )
 set (  EXMIMO_IOT True )
-set (  HARD_RT False )
 set (  JUMBO_FRAME True )
 set (  LARGE_SCALE False )
 set (  LINK_ENB_PDCP_TO_GTPV1U True)
diff --git a/cmake_targets/oaisim_mme_build_oai/CMakeLists.template b/cmake_targets/oaisim_mme_build_oai/CMakeLists.template
index 9ce736d8189ed1c31c999cb47bb7122bd0174b86..98ee8a950eb354e18cafcbf02f1b06cf665fec58 100644
--- a/cmake_targets/oaisim_mme_build_oai/CMakeLists.template
+++ b/cmake_targets/oaisim_mme_build_oai/CMakeLists.template
@@ -17,7 +17,6 @@ set (  ENABLE_VCD_FIFO False )
 set (  ENB_MODE False )
 set (  EPC_BUILD True )
 set (  EXMIMO_IOT False )
-set (  HARD_RT False )
 set (  JUMBO_FRAME False )
 set (  LARGE_SCALE False )
 set (  LINK_ENB_PDCP_TO_GTPV1U True)
diff --git a/cmake_targets/oaisim_noS1_build_oai/CMakeLists.template b/cmake_targets/oaisim_noS1_build_oai/CMakeLists.template
index 6dd0f2ffca18ba1d18f1395a7731be89a0cec62a..9067390a0c1539807ab9cf4642bd4330c22748f5 100644
--- a/cmake_targets/oaisim_noS1_build_oai/CMakeLists.template
+++ b/cmake_targets/oaisim_noS1_build_oai/CMakeLists.template
@@ -15,7 +15,6 @@ set (  ENABLE_USE_RAW_SOCKET_FOR_SGI False)
 set (  ENABLE_VCD_FIFO False )
 set (  ENB_MODE True )
 set (  EXMIMO_IOT True )
-set (  HARD_RT False )
 set (  JUMBO_FRAME True )
 set (  LARGE_SCALE False )
 set (  LINK_ENB_PDCP_TO_GTPV1U False)
diff --git a/cmake_targets/s1c_mme_test/CMakeLists.template b/cmake_targets/s1c_mme_test/CMakeLists.template
index cf5e6b241b0687a5ef7c21373707606fe32c3f04..f54d35cd46cf590616e8df6fff3ccfebd06409ff 100644
--- a/cmake_targets/s1c_mme_test/CMakeLists.template
+++ b/cmake_targets/s1c_mme_test/CMakeLists.template
@@ -17,7 +17,6 @@ set (  ENABLE_USE_RAW_SOCKET_FOR_SGI True)
 set (  ENABLE_VCD_FIFO False )
 set (  ENB_MODE True )
 set (  EXMIMO_IOT True )
-set (  HARD_RT False )
 set (  JUMBO_FRAME True )
 set (  LARGE_SCALE False )
 set (  LINK_ENB_PDCP_TO_GTPV1U True)