2 files changed, 9 insertions, 5 deletions

diff --git a/src/luarocks/type_check.lua b/src/luarocks/type_check.lua
index d4fec1bf..a99ec691 100644
--- a/src/luarocks/type_check.lua
+++ b/src/luarocks/type_check.lua
@@ -31,8 +31,10 @@ type_check.MAGIC_PLATFORMS = {}
 do
    local function fill_in_version(tbl, version)
       for _, v in pairs(tbl.fields) do
-         if v._version == nil then
-            v._version = version
+         if type(v) == "table" then
+            if v._version == nil then
+               v._version = version
+            end
             fill_in_version(v)
          end
       end
diff --git a/src/luarocks/type_check.tl b/src/luarocks/type_check.tl
index 0f3bde2d..a51fa932 100644
--- a/src/luarocks/type_check.tl
+++ b/src/luarocks/type_check.tl
@@ -31,9 +31,11 @@ type_check.MAGIC_PLATFORMS = {}
 do
    local function fill_in_version(tbl: TableSchema, version?: string)
       for _, v in pairs(tbl.fields) do
-         if v._version == nil then
-            v._version = version
-         fill_in_version(v)
+         if v is TableSchema then
+            if v._version == nil then
+               v._version = version
+            end
+            fill_in_version(v)
          end
       end
    end