diff --git a/source/blender/imbuf/CMakeLists.txt b/source/blender/imbuf/CMakeLists.txt
index f7c9807ce1f..62f9310355a 100644
--- a/source/blender/imbuf/CMakeLists.txt
+++ b/source/blender/imbuf/CMakeLists.txt
@@ -15,7 +15,6 @@ set(INC
 set(INC_SYS
   ${JPEG_INCLUDE_DIR}
   ${ZLIB_INCLUDE_DIRS}
-  ${IMATH_INCLUDE_DIRS}
   ${OPENIMAGEIO_INCLUDE_DIRS}
 )
 
diff --git a/source/blender/imbuf/intern/oiio/CMakeLists.txt b/source/blender/imbuf/intern/oiio/CMakeLists.txt
index 10a4b36c788..3ed76ccd1ea 100644
--- a/source/blender/imbuf/intern/oiio/CMakeLists.txt
+++ b/source/blender/imbuf/intern/oiio/CMakeLists.txt
@@ -11,7 +11,6 @@ set(INC
 )
 
 set(INC_SYS
-  ${IMATH_INCLUDE_DIRS}
   ${OPENIMAGEIO_INCLUDE_DIRS}
 )