diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 97bec2488db..747437db249 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -730,7 +730,7 @@ RTL_BASE_H = rtl.h rtl.def machmode.h machmode.def
 RTL_H = $(RTL_BASE_H) genrtl.h
 TREE_H = tree.h real.h tree.def machmode.h machmode.def tree-check.h
 BASIC_BLOCK_H = basic-block.h bitmap.h
-DEMANGLE_H = demangle.h
+DEMANGLE_H = $(srcdir)/../include/demangle.h
 RECOG_H = recog.h
 EXPR_H = expr.h insn-codes.h
 REGS_H = regs.h varray.h machmode.h machmode.def