diff --git a/atlas-cardano.cabal b/atlas-cardano.cabal
index 40a900eb..bb5ce888 100644
--- a/atlas-cardano.cabal
+++ b/atlas-cardano.cabal
@@ -317,6 +317,7 @@ test-suite atlas-tests
     GeniusYield.Test.Providers
     GeniusYield.Test.Providers.Mashup
     GeniusYield.Test.RefInput
+    GeniusYield.Test.SimpleScript
     GeniusYield.Test.SlotConfig
     GeniusYield.Test.Stake
 
diff --git a/src/GeniusYield/Types/Script/SimpleScript.hs b/src/GeniusYield/Types/Script/SimpleScript.hs
index fcc92914..b9f9bdbf 100644
--- a/src/GeniusYield/Types/Script/SimpleScript.hs
+++ b/src/GeniusYield/Types/Script/SimpleScript.hs
@@ -122,11 +122,9 @@ hashSimpleScript = scriptHashFromApi . hashSimpleScript'
 hashSimpleScript' :: GYSimpleScript -> Api.ScriptHash
 hashSimpleScript' = Api.hashScript . Api.SimpleScript . simpleScriptToApi
 
--- FIXME: Need to test this.
 simpleScriptFromCBOR :: Text -> Maybe GYSimpleScript
 simpleScriptFromCBOR = simpleScriptFromCBOR' . encodeUtf8
 
--- FIXME: Need to test this.
 simpleScriptFromCBOR' :: ByteString -> Maybe GYSimpleScript
 simpleScriptFromCBOR' b = do
   bs <- rightToMaybe (BS16.decode b)
diff --git a/tests-privnet/GeniusYield/Test/Privnet/SimpleScripts.hs b/tests-privnet/GeniusYield/Test/Privnet/SimpleScripts.hs
index bae2ff43..5d686615 100644
--- a/tests-privnet/GeniusYield/Test/Privnet/SimpleScripts.hs
+++ b/tests-privnet/GeniusYield/Test/Privnet/SimpleScripts.hs
@@ -4,10 +4,13 @@ module GeniusYield.Test.Privnet.SimpleScripts (
 
 import Control.Lens (each, (%~), (&))
 import Control.Monad (when)
+import GeniusYield.Test.Privnet.Asserts (assertEqual)
 import GeniusYield.Test.Privnet.Ctx
 import GeniusYield.Test.Privnet.Setup
 import GeniusYield.TxBuilder
 import GeniusYield.Types
+import GeniusYield.Types.Script (GYAnyScript (GYSimpleScript))
+import GeniusYield.Types.UTxO (GYUTxO (utxoRefScript))
 import Test.Tasty (TestTree, testGroup)
 import Test.Tasty.HUnit (testCaseSteps)
 
@@ -39,6 +42,9 @@ exerciseASimpleScript ctx info toUseRefScript = do
   info $ "Successfully funded the simple script, with tx id: " <> show txIdFund
   info "Now consuming from the simple script"
   let toConsume = txOutRefFromTuple (txIdFund, 0)
+  when toUseRefScript $ do
+    toConsumeUtxo <- ctxRun ctx fundUser $ utxoAtTxOutRef' toConsume
+    assertEqual "Reference script must be equal to actual script" (Just $ GYSimpleScript multiSigSimpleScript) (utxoRefScript toConsumeUtxo)
   txIdConsume <- ctxRun ctx fundUser $ do
     txBodyConsume <- buildTxBody $ mustHaveInput @'PlutusV2 $ GYTxIn toConsume (GYTxInWitnessSimpleScript $ if toUseRefScript then GYInReferenceSimpleScript toConsume multiSigSimpleScript else GYInSimpleScript multiSigSimpleScript)
     submitTxBodyConfirmed txBodyConsume $ userPaymentSKey <$> [user1, user2, user3]
diff --git a/tests/GeniusYield/Test/SimpleScript.hs b/tests/GeniusYield/Test/SimpleScript.hs
new file mode 100644
index 00000000..7968b763
--- /dev/null
+++ b/tests/GeniusYield/Test/SimpleScript.hs
@@ -0,0 +1,31 @@
+module GeniusYield.Test.SimpleScript (
+  simpleScriptTests,
+) where
+
+import Control.Monad (forM_)
+import Data.Maybe (fromJust)
+import GeniusYield.GYConfig
+import GeniusYield.Test.Privnet.Asserts (assertEqual)
+import GeniusYield.Types
+import Test.Tasty (TestTree, testGroup)
+import Test.Tasty.HUnit (testCase, (@?=))
+
+simpleScriptTests :: [GYCoreConfig] -> TestTree
+simpleScriptTests configs =
+  testGroup
+    "simple-script"
+    [ testCase "able to read simple-script from file" $ do
+        ss <- readSimpleScript "tests/mock-data/simple-script.json"
+        ss
+          @?= RequireAllOf
+            [ RequireTimeAfter (slotFromWord64 1000)
+            , RequireSignature "966e394a544f242081e41d1965137b1bb412ac230d40ed5407821c37"
+            , RequireMOf 2 [RequireSignature "2f3d4cf10d0471a1db9f2d2907de867968c27bca6272f062cd1c2413", RequireSignature "f856c0c5839bab22673747d53f1ae9eed84afafb085f086e8e988614", RequireSignature "b275b08c999097247f7c17e77007c7010cd19f20cc086ad99d398538"]
+            , RequireAnyOf [RequireSignature "4d780ed1bfc88cbd4da3f48de91fe728c3530d662564bf5a284b5321", RequireSignature "3a94d6d4e786a3f5d439939cafc0536f6abc324fb8404084d6034bf8"]
+            ]
+    , testCase "able to read on-chain simple script" $ do
+        forM_ configs $ \config -> withCfgProviders config mempty $ \provider -> do
+          utxo <- fromJust <$> gyQueryUtxoAtTxOutRef provider "bce517a8353c663e9f19feb3aaf28e7d1ce8579c988a7e86ca60b5527b1bd4e4#0"
+          let sscript = RequireAnyOf [RequireSignature "07fb2b78b3917d3f6bfa3a59de61f3c225cbf0d5564a1cbc6f96d6eb"]
+          assertEqual "Simple script not equal" (Just $ GYSimpleScript sscript) (utxoRefScript utxo)
+    ]
diff --git a/tests/atlas-tests.hs b/tests/atlas-tests.hs
index 23850674..ec2fa748 100644
--- a/tests/atlas-tests.hs
+++ b/tests/atlas-tests.hs
@@ -11,7 +11,6 @@ import Test.Tasty.HUnit (
   assertEqual,
   testCase,
   (@=?),
-  (@?=),
  )
 
 import GeniusYield.Examples.Gift
@@ -28,6 +27,7 @@ import GeniusYield.Test.GYTxBody (gyTxBodyTests)
 import GeniusYield.Test.GYTxSkeleton (gyTxSkeletonTests)
 import GeniusYield.Test.Providers (providersTests)
 import GeniusYield.Test.RefInput (refInputTests)
+import GeniusYield.Test.SimpleScript (simpleScriptTests)
 import GeniusYield.Test.SlotConfig (slotConversionTests)
 import GeniusYield.Test.Stake (stakeTests)
 import GeniusYield.Types
@@ -74,9 +74,6 @@ main = do
               expected @=? first (dropWhile (/= '(') . show) e
           ]
       , blueprintTests
-      , testCase "able to read simple-script" $ do
-          ss <- readSimpleScript (mockDataDir </> "simple-script.json")
-          ss @?= RequireAllOf [RequireTimeAfter (slotFromWord64 1000), RequireSignature "966e394a544f242081e41d1965137b1bb412ac230d40ed5407821c37", RequireMOf 2 [RequireSignature "2f3d4cf10d0471a1db9f2d2907de867968c27bca6272f062cd1c2413", RequireSignature "f856c0c5839bab22673747d53f1ae9eed84afafb085f086e8e988614", RequireSignature "b275b08c999097247f7c17e77007c7010cd19f20cc086ad99d398538"], RequireAnyOf [RequireSignature "4d780ed1bfc88cbd4da3f48de91fe728c3530d662564bf5a284b5321", RequireSignature "3a94d6d4e786a3f5d439939cafc0536f6abc324fb8404084d6034bf8"]]
       , slotConversionTests
       , coinSelectionTests
       , gyTxBodyTests
@@ -85,6 +82,7 @@ main = do
       , refInputTests
       , feeTrackingTests
       , stakeTests (head configs)
+      , simpleScriptTests configs
       , providersTests configs providerToken netId
       ]
 
@@ -111,6 +109,3 @@ findPackageRoot = do
   if here
     then return "."
     else fail "Cannot find package root"
-
-mockDataDir :: FilePath
-mockDataDir = "tests/mock-data"