diff --git a/source/MaterialXCore/CMakeLists.txt b/source/MaterialXCore/CMakeLists.txt
index 9ace40b592..37edf7929a 100644
--- a/source/MaterialXCore/CMakeLists.txt
+++ b/source/MaterialXCore/CMakeLists.txt
@@ -7,10 +7,6 @@ add_library(MaterialXCore ${materialx_source} ${materialx_headers})
 
 add_definitions(-DMATERIALX_CORE_EXPORTS)
 
-if (MATERIALX_BUILD_SHARED_LIBS)
-target_compile_definitions(MaterialXCore PUBLIC -DMATERIALX_BUILD_SHARED_LIBS)
-endif()
-
 set_target_properties(
     MaterialXCore PROPERTIES
     OUTPUT_NAME MaterialXCore${MATERIALX_LIBNAME_SUFFIX}
diff --git a/source/MaterialXCore/Generated.h.in b/source/MaterialXCore/Generated.h.in
index 94c3293ad6..fecd321153 100644
--- a/source/MaterialXCore/Generated.h.in
+++ b/source/MaterialXCore/Generated.h.in
@@ -10,6 +10,8 @@
 #define MATERIALX_MINOR_VERSION @MATERIALX_MINOR_VERSION@
 #define MATERIALX_BUILD_VERSION @MATERIALX_BUILD_VERSION@
 
+#cmakedefine MATERIALX_BUILD_SHARED_LIBS
+
 // Establish namespace:
 namespace @MATERIALX_NAMESPACE@
 {