diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index 690ba14e69975..1329e3a0b959d 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -656,6 +656,11 @@ impl Emitter for SilentEmitter {
     }
 }
 
+/// Maximum number of lines we will print for a multiline suggestion; arbitrary.
+///
+/// This should be replaced with a more involved mechanism to output multiline suggestions that
+/// more closely mimics the regular diagnostic output, where irrelevant code lines are elided.
+pub const MAX_SUGGESTION_HIGHLIGHT_LINES: usize = 6;
 /// Maximum number of suggestions to be shown
 ///
 /// Arbitrary, but taken from trait import suggestion limit