diff --git a/cmake/trigdx_config.hpp.in b/cmake/trigdx_config.hpp.in
index d5cc4d0..aa643a7 100644
--- a/cmake/trigdx_config.hpp.in
+++ b/cmake/trigdx_config.hpp.in
@@ -1,5 +1,5 @@
 #pragma once
 
-#define TRIGDX_USE_MKL @TRIGDX_USE_MKL@
-#define TRIGDX_USE_GPU @TRIGDX_USE_GPU@
-#define TRIGDX_USE_XSIMD @TRIGDX_USE_XSIMD@
\ No newline at end of file
+#cmakedefine TRIGDX_USE_MKL
+#cmakedefine TRIGDX_USE_GPU
+#cmakedefine TRIGDX_USE_XSIMD
\ No newline at end of file
diff --git a/include/trigdx/trigdx.hpp b/include/trigdx/trigdx.hpp
index 1352e7f..f87abf2 100644
--- a/include/trigdx/trigdx.hpp
+++ b/include/trigdx/trigdx.hpp
@@ -6,14 +6,14 @@
 #include <trigdx/lookup.hpp>
 #include <trigdx/lookup_avx.hpp>
 
-#if TRIGDX_USE_MKL
+#if defined(TRIGDX_USE_MKL)
 #include <trigdx/mkl.hpp>
 #endif
 
-#if TRIGDX_USE_GPU
+#if defined(TRIGDX_USE_GPU)
 #include <trigdx/gpu.hpp>
 #endif
 
-#if TRIGDX_USE_XSIMD
+#if defined(TRIGDX_USE_XSIMD)
 #include <trigdx/lookup_xsimd.hpp>
 #endif
\ No newline at end of file