diff --git a/core/hw/sh4/dyna/blockmanager.cpp b/core/hw/sh4/dyna/blockmanager.cpp
index eb33e0e62..aca75bc19 100644
--- a/core/hw/sh4/dyna/blockmanager.cpp
+++ b/core/hw/sh4/dyna/blockmanager.cpp
@@ -548,7 +548,7 @@ void print_blocks()
 		INFO_LOG(DYNAREC, "Writing blocks to %p", f);
 	}
 
-	for (auto it : blkmap)
+	for (const auto& it : blkmap)
 	{
 		RuntimeBlockInfoPtr blk = it.second;
 		if (f)