diff --git a/src/Grisette/Internal/SymPrim/Prim/Internal/Term.hs b/src/Grisette/Internal/SymPrim/Prim/Internal/Term.hs
index 35224f00..54f9a132 100644
--- a/src/Grisette/Internal/SymPrim/Prim/Internal/Term.hs
+++ b/src/Grisette/Internal/SymPrim/Prim/Internal/Term.hs
@@ -2151,9 +2151,10 @@ instance (SupportedPrim t) => Eq (Term t) where
     if threadId a == threadId b
       then identity a == identity b
       else unsafePerformIO $ do
-        a' <- fullReconstructTerm a
-        b' <- fullReconstructTerm b
-        return $ identity a' == identity b'
+        tid <- myWeakThreadId
+        a' <- toCurThreadImpl tid a
+        b' <- toCurThreadImpl tid b
+        return $ a' == b'
 
 instance (SupportedPrim t) => Hashable (Term t) where
   hashWithSalt s t = hashWithSalt s $ baseHash t
diff --git a/test/Grisette/SymPrim/Prim/ConcurrentTests.hs b/test/Grisette/SymPrim/Prim/ConcurrentTests.hs
index 7e8398bd..38dafd50 100644
--- a/test/Grisette/SymPrim/Prim/ConcurrentTests.hs
+++ b/test/Grisette/SymPrim/Prim/ConcurrentTests.hs
@@ -8,7 +8,7 @@ import Control.DeepSeq (force)
 import Control.Exception (evaluate)
 import Data.Hashable (Hashable (hash))
 import Data.String (IsString (fromString))
-import Grisette (SymInteger (SymInteger))
+import Grisette (SymEq ((.==)), SymInteger (SymInteger), evalSymToCon, solve, z3)
 import Test.Framework (Test, testGroup)
 import Test.Framework.Providers.HUnit (testCase)
 import Test.HUnit ((@?=))
@@ -31,5 +31,22 @@ concurrentTests =
           putMVar bref p
         br <- takeMVar bref
         ar @?= br
-        hash ar @?= hash br
+        hash ar @?= hash br,
+      testCase "Eval" $ do
+        aref <- newEmptyMVar
+        bref <- newEmptyMVar
+        _ <- forkIO $ do
+          a <- evaluate $ force ("a" :: SymInteger)
+          putMVar aref a
+        _ <- forkIO $ do
+          b <- evaluate $ force ("b" :: SymInteger)
+          putMVar bref b
+        a@(SymInteger ta) <- takeMVar aref
+        b@(SymInteger tb) <- takeMVar bref
+        r <- solve z3 $ a .== b
+        print ta 
+        print tb
+        case r of
+          Left err -> error $ show err
+          Right m -> evalSymToCon m a @?= (evalSymToCon m b :: Integer)
     ]