diff --git a/source/blender/python/mathutils/mathutils.c b/source/blender/python/mathutils/mathutils.c
index 1ecb2c08bc1..349f8483fb0 100644
--- a/source/blender/python/mathutils/mathutils.c
+++ b/source/blender/python/mathutils/mathutils.c
@@ -477,8 +477,10 @@ static struct PyModuleDef M_Mathutils_module_def = {
 
 /* submodules only */
 #include "mathutils_geometry.h"
-#include "mathutils_kdtree.h"
-#include "mathutils_noise.h"
+#ifndef MATH_STANDALONE
+#  include "mathutils_kdtree.h"
+#  include "mathutils_noise.h"
+#endif
 
 PyMODINIT_FUNC PyInit_mathutils(void)
 {
diff --git a/source/blender/python/mathutils/mathutils_Matrix.c b/source/blender/python/mathutils/mathutils_Matrix.c
index 6129bb869f5..34564007478 100644
--- a/source/blender/python/mathutils/mathutils_Matrix.c
+++ b/source/blender/python/mathutils/mathutils_Matrix.c
@@ -31,9 +31,9 @@
 
 #include "BLI_math.h"
 #include "BLI_utildefines.h"
-#include "BLI_string.h"
 
 #ifndef MATH_STANDALONE
+#  include "BLI_string.h"
 #  include "BLI_dynstr.h"
 #endif