diff --git a/lib/msf/core/auxiliary/jtr.rb b/lib/msf/core/auxiliary/jtr.rb
index 0e1efa78de..114391c205 100644
--- a/lib/msf/core/auxiliary/jtr.rb
+++ b/lib/msf/core/auxiliary/jtr.rb
@@ -36,7 +36,7 @@ module Auxiliary::JohnTheRipper
 		
 		case ::RUBY_PLATFORM
 		when /mingw|cygwin|mswin/
-			data = `#{cpuinfo_base}/cpuinfo.exe`
+			data = `"#{cpuinfo_base}/cpuinfo.exe"`
 			case data
 			when /sse2/
 				@run_path = "run.win32.sse2/john.exe"