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-rw-r--r--src/tools/compiletest/src/runtest.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index f283a625f97..debf67e2741 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -1766,7 +1766,7 @@ impl<'test> TestCx<'test> {
 
         match self.config.compare_mode {
             Some(CompareMode::Polonius) => {
-                rustc.args(&["-Zpolonius"]);
+                rustc.args(&["-Zpolonius=next"]);
             }
             Some(CompareMode::NextSolver) => {
                 rustc.args(&["-Znext-solver"]);