diff --git a/src/librustc_mir/transform/generator.rs b/src/librustc_mir/transform/generator.rs
index 841d18268b13a..b386582947f1a 100644
--- a/src/librustc_mir/transform/generator.rs
+++ b/src/librustc_mir/transform/generator.rs
@@ -997,14 +997,14 @@ fn can_return<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'tcx>) -> bool {
         return false;
     }
 
-    // If there's no return terminator the function also won't return.
+    // If there's a return terminator the function may return.
     for block in body.basic_blocks() {
         if let TerminatorKind::Return = block.terminator().kind {
             return true;
         }
     }
 
-    // Otherwise we assume that the function may return.
+    // Otherwise the function can't return.
     false
 }