diff --git a/CMakeLists.txt b/CMakeLists.txt
index f5a9ed0..10cdf18 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,8 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 
 project(IACore)
 
+enable_language(C)
+
 # Default to ON if root, OFF if dependency
 option(IACore_BUILD_TESTS "Build unit tests" ${PROJECT_IS_TOP_LEVEL})
 
diff --git a/Tests/Unit/CMakeLists.txt b/Tests/Unit/CMakeLists.txt
index cffabe3..0944a37 100644
--- a/Tests/Unit/CMakeLists.txt
+++ b/Tests/Unit/CMakeLists.txt
@@ -3,8 +3,6 @@ set(TEST_NAME_PREFIX "IACore_Test_Unit_")
 # ------------------------------------------------
 #   C Compile Test
 # ------------------------------------------------
-enable_language(C)
-
 add_executable(${TEST_NAME_PREFIX}CCompile "CCompile.c")
 
 set_target_properties(${TEST_NAME_PREFIX}CCompile PROPERTIES