diff --git a/csound-expression.cabal b/csound-expression.cabal
--- a/csound-expression.cabal
+++ b/csound-expression.cabal
@@ -1,6 +1,6 @@
 Name:          csound-expression
-Version:       5.4.1
-Cabal-Version: >= 1.22
+Version:       5.4.2
+cabal-version: >= 1.22
 License:       BSD3
 License-file:  LICENSE
 Author:	       Anton Kholomiov
@@ -85,8 +85,8 @@
         colour >= 2.0,
         transformers >= 0.3,
         containers,
-        csound-expression-typed >= 0.2.5,
-        csound-expression-dynamic >= 0.3.7,
+        csound-expression-typed >= 0.2.6,
+        csound-expression-dynamic >= 0.3.8,
         temporal-media >= 0.6.3,
         csound-expression-opcodes >= 0.0.5.1
   default-language: Haskell2010
diff --git a/src/Csound/Control/Instr.hs b/src/Csound/Control/Instr.hs
--- a/src/Csound/Control/Instr.hs
+++ b/src/Csound/Control/Instr.hs
@@ -178,8 +178,8 @@
 --
 -- > schedStream releaseTime instr evt
 schedStream :: (Arg a, Sigs b) => D -> D -> (a -> SE b) -> Evt a -> SE b
-schedStream start rel ins evt = do
-  (insId, res) <- newOutInstr ins
+schedStream start rel instr evt = do
+  (insId, res) <- newOutInstr instr
   runEvt evt $ \x -> do
     scheduleEvent (negateInstrRef insId) 0 rel x
     scheduleEvent insId start (-1) x