diff --git a/release/datafiles/userdef/userdef_default.c b/release/datafiles/userdef/userdef_default.c
index 73146e59123..99c8cd72dba 100644
--- a/release/datafiles/userdef/userdef_default.c
+++ b/release/datafiles/userdef/userdef_default.c
@@ -17,7 +17,7 @@
 /* Preferences Data File 'U_default'. */
 
 /* For constants. */
-#include <math.h>
+#include "BLI_math_base.h"
 
 #include "DNA_userdef_types.h"
 #include "DNA_curve_types.h"