diff --git a/migen/fhdl/specials.py b/migen/fhdl/specials.py
index edc4aa90b..31dcf1d30 100644
--- a/migen/fhdl/specials.py
+++ b/migen/fhdl/specials.py
@@ -278,6 +278,11 @@ def gn(e):
                 return verilog_printexpr(ns, e)[0]
         adrbits = bits_for(memory.depth-1)
 
+        for port in memory.ports:
+            if port.async_read:
+                r += "(* ram_style = \"distributed\" *) "
+                break
+
         r += "reg [" + str(memory.width-1) + ":0] " \
             + gn(memory) \
             + "[0:" + str(memory.depth-1) + "];\n"