diff --git a/SConstruct b/SConstruct
index beaf9aedb5..fb3421ca6f 100755
--- a/SConstruct
+++ b/SConstruct
@@ -764,6 +764,9 @@ protocol_dirs = []
 Export('protocol_dirs')
 slicc_includes = []
 Export('slicc_includes')
+# list of protocols that require the partial functional read interface
+need_partial_func_reads = []
+Export('need_partial_func_reads')
 
 # Walk the tree and execute all SConsopts scripts that wil add to the
 # above variables
diff --git a/src/mem/ruby/system/SConscript b/src/mem/ruby/system/SConscript
index a2708ae9db..e87cd249c9 100644
--- a/src/mem/ruby/system/SConscript
+++ b/src/mem/ruby/system/SConscript
@@ -45,9 +45,6 @@ if env['PROTOCOL'] == 'None':
 
 env.Append(CPPDEFINES=['PROTOCOL_' + env['PROTOCOL']])
 
-# list of protocols that require the partial functional read interface
-need_partial_func_reads = []
-
 if env['PROTOCOL'] in need_partial_func_reads:
     env.Append(CPPDEFINES=['PARTIAL_FUNC_READS'])