diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 95f6e047bf9e..7a3c0d28fc3e 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -2303,6 +2303,8 @@ impl<'test> TestCx<'test> {
         } else {
             filecheck.args(&["--check-prefixes", &prefixes]);
         }
+        // Provide more context on failures.
+        filecheck.args(&["--dump-input-context", "100"]);
         self.compose_and_run(filecheck, "", None, None)
     }