diff --git a/src/tests/add-ons/kernel/file_systems/befs/btree/Jamfile b/src/tests/add-ons/kernel/file_systems/befs/btree/Jamfile
index 2118654971..b8375655fe 100644
--- a/src/tests/add-ons/kernel/file_systems/befs/btree/Jamfile
+++ b/src/tests/add-ons/kernel/file_systems/befs/btree/Jamfile
@@ -2,11 +2,11 @@ SubDir OBOS_TOP src tests add-ons kernel file_systems befs btree ;
 
 SubDirHdrs $(OBOS_TOP) src add-ons kernel file_systems befs ;
 
-rule FPreIncludes { return -include\ $(<) ; }
+rule FPreIncludes { return -include\ $(1:D=$(SUBDIR)) ; }
 
 {
 	local defines = [ FDefines USER DEBUG ] ; # _NO_INLINE_ASM
-	local preIncludes = [ FPreIncludes ./Journal.h ./Inode.h ] ;
+	local preIncludes = [ FPreIncludes Journal.h Inode.h ] ;
 	SubDirC++Flags $(defines) $(preIncludes) -fno-exceptions -fno-rtti ; #-fcheck-memory-usage
 }