diff --git a/MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt b/MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
--- a/MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
+++ b/MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
@@ -1,3 +1,4 @@
+set(CMAKE_CXX_STANDARD 14)
 list(APPEND CXXFLAGS -fno-exceptions)
 if(SMALL_PROBLEM_SIZE)
   set(RUN_OPTIONS --cartvis 1.0 0.0 --rhomin 1e-8 -n 4 --domain 32 32 32)
diff --git a/SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt b/SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
--- a/SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
+++ b/SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
@@ -1,3 +1,4 @@
+set(CMAKE_CXX_STANDARD 14)
 list(APPEND CXXFLAGS -pthread)
 list(APPEND LDFLAGS -lm -pthread)
 llvm_singlesource()
diff --git a/SingleSource/Benchmarks/Misc-C++/CMakeLists.txt b/SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
--- a/SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
+++ b/SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
@@ -1,3 +1,4 @@
+set(CMAKE_CXX_STANDARD 14)
 add_subdirectory(Large)
 
 list(APPEND LDFLAGS -lm)