diff --git a/SamTFE/Sources/CMakeLists.txt b/SamTFE/Sources/CMakeLists.txt
index 07b65c87..56dd17c8 100644
--- a/SamTFE/Sources/CMakeLists.txt
+++ b/SamTFE/Sources/CMakeLists.txt
@@ -133,7 +133,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME MATCHES "GNU|kFreeBSD
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}  -Wno-reorder -Wno-unused-but-set-variable -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-unused-function -Wno-format")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}  -Wno-reorder -Wno-unused-but-set-variable -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-unused-function -Wno-format")
 endif()
-if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
     SET(FREEBSD TRUE)
 endif()
 if(APPLE)
diff --git a/SamTSE/Sources/CMakeLists.txt b/SamTSE/Sources/CMakeLists.txt
index 5e9a8214..83d8665d 100644
--- a/SamTSE/Sources/CMakeLists.txt
+++ b/SamTSE/Sources/CMakeLists.txt
@@ -133,7 +133,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME MATCHES "GNU|kFreeBSD
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}  -Wno-reorder -Wno-unused-but-set-variable -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-unused-function -Wno-format")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}  -Wno-reorder -Wno-unused-but-set-variable -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-unused-function -Wno-format")
 endif()
-if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
     SET(FREEBSD TRUE)
 endif()
 if(APPLE)