diff --git a/src/pawns.cpp b/src/pawns.cpp
index 560fd76b..3023021d 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -124,6 +124,8 @@ namespace {
                 || (   stoppers == blocked && r >= RANK_5
                     && (shift<Up>(support) & ~(theirPawns | doubleAttackThem)));
 
+        passed &= !(forward_file_bb(Us, s) & ourPawns);
+
         // Passed pawns will be properly scored later in evaluation when we have
         // full attack info.
         if (passed)