diff --git a/python/m5/objects/BaseCache.mpy b/python/m5/objects/BaseCache.mpy
index 214e0555c..a9bda5c99 100644
--- a/python/m5/objects/BaseCache.mpy
+++ b/python/m5/objects/BaseCache.mpy
@@ -58,3 +58,5 @@ simobj BaseCache(BaseMem):
          "Check if in cash on push or pop of prefetch queue")
     prefetch_use_cpu_id = Param.Bool(True,
          "Use the CPU ID to seperate calculations of prefetches")
+    prefetch_data_accesses_only = Param.Bool(False,
+         "Only prefetch on data not on instruction accesses")