diff --git a/src/mem/cache/compressors/Compressors.py b/src/mem/cache/compressors/Compressors.py
index d7dfdab6b9..689a42e2e9 100644
--- a/src/mem/cache/compressors/Compressors.py
+++ b/src/mem/cache/compressors/Compressors.py
@@ -125,8 +125,9 @@ class PerfectCompressor(BaseCacheCompressor):
     cxx_header = "mem/cache/compressors/perfect.hh"
 
     chunk_size_bits = 64
-    max_compression_ratio = Param.Int(Parent.max_compression_ratio,
-        "Maximum compression ratio allowed")
+
+    max_compression_ratio = Param.Int("Maximum compression ratio allowed")
+
     compression_latency = Param.Cycles(1,
         "Number of cycles to perform data compression")
     decompression_latency = Param.Cycles(1,