diff --git a/lib/cocaine/command_line.rb b/lib/cocaine/command_line.rb
index 92393f9..5b53dea 100644
--- a/lib/cocaine/command_line.rb
+++ b/lib/cocaine/command_line.rb
@@ -77,7 +77,7 @@ def run(interpolations = {})
       rescue Errno::ENOENT => e
         raise Cocaine::CommandNotFoundError, e.message
       ensure
-        @exit_status = $?.exitstatus if $?.respond_to?(:exitstatus)
+        @exit_status = $?.respond_to?(:exitstatus) ? $?.exitstatus : 0
       end
       if @exit_status == 127
         raise Cocaine::CommandNotFoundError