diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index 55ae1a2c09..b28d3ce36b 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -91,9 +91,9 @@ ifdef CONFIG_INSTALL_GCCGO
 endif
 
 ifdef CONFIG_GCC_USE_GRAPHITE
-  GRAPHITE_CONFIGURE=--with-isl=$(HOST_BUILD_PREFIX)
+  GRAPHITE_CONFIGURE:= --with-isl=$(TOPDIR)/staging_dir/host
 else
-  GRAPHITE_CONFIGURE=--without-isl --without-cloog
+  GRAPHITE_CONFIGURE:= --without-isl --without-cloog
 endif
 
 GCC_CONFIGURE:= \