diff --git a/libs/core/langchain_core/runnables/graph_mermaid.py b/libs/core/langchain_core/runnables/graph_mermaid.py
index a471ffe26f6..1d06095b7b7 100644
--- a/libs/core/langchain_core/runnables/graph_mermaid.py
+++ b/libs/core/langchain_core/runnables/graph_mermaid.py
@@ -119,9 +119,9 @@ def draw_mermaid(
                         for i in range(0, len(words), wrap_label_n_words)
                     )
                 if edge.conditional:
-                    edge_label = f" -. &nbsp{edge_data}&nbsp .-> "
+                    edge_label = f" -.  {edge_data}  .-> "
                 else:
-                    edge_label = f" -- &nbsp{edge_data}&nbsp --> "
+                    edge_label = f" --  {edge_data}  --> "
             else:
                 if edge.conditional:
                     edge_label = " -.-> "