diff --git a/Src/IACore/CMakeLists.txt b/Src/IACore/CMakeLists.txt
index c516c62..6799b23 100644
--- a/Src/IACore/CMakeLists.txt
+++ b/Src/IACore/CMakeLists.txt
@@ -2,4 +2,4 @@
 add_library(IACore STATIC imp/cpp/dummy.cpp)
 
 target_include_directories(IACore PUBLIC inc/hpp imp/inl)
-target_compile_definitions(IACORE PUBLIC _CRT_SECURE_NO_WARNINGS)
+target_compile_definitions(IACore PUBLIC _CRT_SECURE_NO_WARNINGS)
diff --git a/Src/IACore/inc/hpp/iacore/definitions.hpp b/Src/IACore/inc/hpp/iacore/definitions.hpp
index cf2b8bd..02ad0ac 100644
--- a/Src/IACore/inc/hpp/iacore/definitions.hpp
+++ b/Src/IACore/inc/hpp/iacore/definitions.hpp
@@ -28,7 +28,6 @@
 #include <initializer_list>
 
 #if defined (_MSC_VER )
-#define _CRT_SECURE_NO_WARNINGS
 #if !defined(__clang__)
 #error "IA software does not support compilation with MSVC. Please use Clang on Windows platforms."
 #endif