1 files changed, 1 insertions, 1 deletions

diff --git a/src/luarocks/deps.lua b/src/luarocks/deps.lua
index 93b187cf..c556bc23 100644
--- a/src/luarocks/deps.lua
+++ b/src/luarocks/deps.lua
@@ -178,7 +178,7 @@ local function parse_constraint(input)
    if not version then 
       return nil, "Could not parse version from constraint: '"..input.."'"
    end
-   return { op = op, version = version, no_upgrade = no_upgrade=="@" and true or nil }, rest
+   return { op = _op, version = version, no_upgrade = no_upgrade=="@" and true or nil }, rest
 end
 
 --- Convert a list of constraints from string to table format.