diff --git a/tests/incremental/spike-neg1.rs b/tests/incremental/spike-neg1.rs
index c5fe31862b4..356c61759f9 100644
--- a/tests/incremental/spike-neg1.rs
+++ b/tests/incremental/spike-neg1.rs
@@ -7,6 +7,7 @@
 
 //@ revisions:rpass1 rpass2
 //@ should-fail
+//@ compile-flags: -Z query-dep-graph
 
 #![feature(rustc_attrs)]
 
diff --git a/tests/incremental/spike-neg2.rs b/tests/incremental/spike-neg2.rs
index 140aa4684a7..9f69d7a757a 100644
--- a/tests/incremental/spike-neg2.rs
+++ b/tests/incremental/spike-neg2.rs
@@ -7,6 +7,7 @@
 
 //@ revisions:rpass1 rpass2
 //@ should-fail
+//@ compile-flags: -Z query-dep-graph
 
 #![feature(rustc_attrs)]