diff --git a/external/ipc/CMakeLists.txt b/external/ipc/CMakeLists.txt
index 00855161e956b2472cf8818ba2f5c05ade27086e..86cb88bc7cb94a6b412bab92bd05e2e13e462d70 100644
--- a/external/ipc/CMakeLists.txt
+++ b/external/ipc/CMakeLists.txt
@@ -66,7 +66,7 @@ ipc/lib/fles_ipc/TimesliceAutoSource.cpp
 )
 
 
-Set_Source_Files_Properties(${SRCS} COMPILE_FLAGS "-std=c++17 -O3 -ggdb -msse4.2 -Wall -Wpedantic -Wextra -Winit-self -Wundef -Wold-style-cast -Woverloaded-virtual -Wwrite-strings -Wnon-virtual-dtor -fno-omit-frame-pointer")
+Set_Source_Files_Properties(${SRCS} COMPILE_FLAGS "-std=c++14 -O3 -ggdb -msse4.2 -Wall -Wpedantic -Wextra -Winit-self -Wundef -Wold-style-cast -Woverloaded-virtual -Wwrite-strings -Wnon-virtual-dtor -fno-omit-frame-pointer")
 
 Set(LIBRARY_NAME fles_ipc)
 If(UNIX AND NOT APPLE)