diff --git a/dev-lang/go/go-9999.ebuild b/dev-lang/go/go-9999.ebuild
index 6fc180ca12dc2..b34ebb3aaf854 100644
--- a/dev-lang/go/go-9999.ebuild
+++ b/dev-lang/go/go-9999.ebuild
@@ -27,7 +27,7 @@ SLOT="0/${PV}"
 IUSE=""
 
 DEPEND=">=dev-lang/go-bootstrap-1.4.1"
-RDEPEND=""
+RDEPEND="!<dev-go/go-tools-0_pre20150902"
 
 # These test data objects have writable/executable stacks.
 QA_EXECSTACK="usr/lib/go/src/debug/elf/testdata/*.obj"