diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5f5f376..035692a4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,7 @@ set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 option(BUILTIN_RUNTIMES "Include the MinGW runtime into the binary itself." ON)
 option(FORCE_32BIT_BIN "Create a 32-bit executable binary if the compiler defaults to 64-bit." OFF)
 option(ENABLE_MYSQL "Enable the MySQL library." OFF)
+option(ENABLE_API21 "Build for 2.1 API." OFF)
 
 # Default to c++14 standard
 if(CMAKE_VERSION VERSION_LESS "3.1")
diff --git a/module/Misc/Routine.hpp b/module/Misc/Routine.hpp
index 30e19a7f..7aba871b 100644
--- a/module/Misc/Routine.hpp
+++ b/module/Misc/Routine.hpp
@@ -39,7 +39,7 @@ private:
         bool        mSuspended; // Whether this instance is allowed to receive calls.
         bool        mQuiet; // Whether this instance is allowed to handle errors.
         bool        mEndure; // Whether this instance is allowed to terminate itself on errors.
-        bool        mTerminated; // Whether this instance is allowed to terminate itself on errors.
+        bool        mTerminated; // Whether this instance was terminated once.
         Uint8       mArgc; // The number of arguments that the routine must forward.
         Argument    mArgv[14]; // The arguments that the routine must forward.
 
diff --git a/vcmp/CMakeLists.txt b/vcmp/CMakeLists.txt
index 4269371a..2f4eb032 100644
--- a/vcmp/CMakeLists.txt
+++ b/vcmp/CMakeLists.txt
@@ -1,5 +1,8 @@
 # Create the VCMP library
 add_library(VCMP STATIC vcmp.h vcmp.c vcmp20.h vcmp21.h)
+# Checkf for API version
+if (ENABLE_API21)
+	target_compile_definitions(VCMP PUBLIC VCMP_SDK_2_1=1)
+endif()
 # Library includes
 target_include_directories(VCMP PUBLIC ${CMAKE_CURRENT_LIST_DIR})
-