diff --git a/.bam/functions.lua b/.bam/functions.lua
index 8c0020f..2012809 100644
--- a/.bam/functions.lua
+++ b/.bam/functions.lua
@@ -19,8 +19,9 @@ function valid_system(value)
 end
 
 
--- Detect what system we currently are on.
-function system()
+-- Find what host system we are on.
+-- Returns nil if system could not be determined.
+function host_system()
 
 	if family ~= nil then
 		if family == "windows" then
diff --git a/bam.lua b/bam.lua
index 8807518..d4b62ae 100644
--- a/bam.lua
+++ b/bam.lua
@@ -14,7 +14,7 @@ CheckVersion("0.5")
 --------------------------------
 
 -- Target specified on command line or get host system.
-TARGET_OS = ScriptArgs.target or system()
+TARGET_OS = ScriptArgs.target or host_system()
 
 if not valid_system(TARGET_OS) then
 	print ("System not supported" )