diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 4efb7ed..6533660 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -11,7 +11,7 @@ target_compile_definitions(${lib} PRIVATE "LMFIT_EXPORT") # for Windows DLL expo
target_include_directories(${lib}
PUBLIC
- $
+ $
$
)