diff --git a/include/slibtool/slibtool.h b/include/slibtool/slibtool.h
index 93982da..68fa139 100644
--- a/include/slibtool/slibtool.h
+++ b/include/slibtool/slibtool.h
@@ -47,7 +47,6 @@ extern "C" {
 #define SLBT_DRIVER_SHARED		0x4000
 #define SLBT_DRIVER_STATIC		0x8000
 
-#define SLBT_DRIVER_HEURISTICS		0x010000
 #define SLBT_DRIVER_STRICT		0x020000
 #define SLBT_DRIVER_NO_UNDEFINED	0x040000
 #define SLBT_DRIVER_MODULE		0x080000