diff --git a/aqua-src/demo.aqua b/aqua-src/demo.aqua
index bf4991a2..f70ca00d 100644
--- a/aqua-src/demo.aqua
+++ b/aqua-src/demo.aqua
@@ -2,13 +2,20 @@ import "builtin.aqua"
 
 service OpH("op"):
   puk(s: string) -> string
+  pek(s: string, -- trgtr
+      c: string) -> string
 
-func a(b: string) -> string:
+func a( -- ferkjn
+  b: string, -- fr
+  c: string, -- asdf
+  g: string
+  ) -> string: -- rgtr
 
   try:
     f = "world"
     OpH "planet"
-    OpH.puk("TRY THIS")
+    OpH.pek("TRY THIS", -- gtrg
+            c)
   catch err:
     OpH.puk(err.msg)
   <- f
diff --git a/parser/src/main/scala/aqua/parser/expr/CallArrowExpr.scala b/parser/src/main/scala/aqua/parser/expr/CallArrowExpr.scala
index e13ca5cb..31634cf0 100644
--- a/parser/src/main/scala/aqua/parser/expr/CallArrowExpr.scala
+++ b/parser/src/main/scala/aqua/parser/expr/CallArrowExpr.scala
@@ -20,7 +20,7 @@ object CallArrowExpr extends Expr.Leaf {
     ((Name.p[F] <* ` <- `).backtrack.?.with1 ~
       ((Ability.ab[F] <* `.`).?.with1 ~
         Name.p[F] ~
-        comma0(Value.`value`[F]).between(`(`, `)`))).map {
+        comma0(Value.`value`[F].surroundedBy(`/s*`)).between(`(` <* `/s*`, `/s*` *> `)`))).map {
       case (variable, ((ability, funcName), args)) =>
         CallArrowExpr(variable, ability, funcName, args)
     }
diff --git a/parser/src/main/scala/aqua/parser/expr/FuncExpr.scala b/parser/src/main/scala/aqua/parser/expr/FuncExpr.scala
index f5c74563..cefea854 100644
--- a/parser/src/main/scala/aqua/parser/expr/FuncExpr.scala
+++ b/parser/src/main/scala/aqua/parser/expr/FuncExpr.scala
@@ -34,10 +34,10 @@ object FuncExpr extends Expr.AndIndented {
       Nil
 
   override def p[F[_]: LiftParser: Comonad]: Parser[FuncExpr[F]] =
-    ((`func` *> ` ` *> Name.p[F]) ~ comma0(Arg.p)
-      .between(`(`, `)`) ~ (` -> ` *> DataTypeToken.`datatypedef`).?).map {
-      case ((name, args), ret) =>
-        FuncExpr(name, args, ret, None)
+    ((`func` *> ` ` *> Name.p[F])
+      ~ comma0(Arg.p.surroundedBy(`/s*`)).between(`(` <* `/s*`, `/s*` *> `)`)
+      ~ (` -> ` *> DataTypeToken.`datatypedef`).?).map { case ((name, args), ret) =>
+      FuncExpr(name, args, ret, None)
     }
 
   override def ast[F[_]: LiftParser: Comonad](): Parser[ValidatedNec[ParserError[F], Ast.Tree[F]]] =
diff --git a/parser/src/main/scala/aqua/parser/lexer/Token.scala b/parser/src/main/scala/aqua/parser/lexer/Token.scala
index 3284dfbe..58aaed0d 100644
--- a/parser/src/main/scala/aqua/parser/lexer/Token.scala
+++ b/parser/src/main/scala/aqua/parser/lexer/Token.scala
@@ -72,6 +72,7 @@ object Token {
   val ` = ` : P[Unit] = P.string("=").surroundedBy(` `.?)
   val `?` : P[Unit] = P.string("?")
   val `<-` : P[Unit] = P.string("<-")
+  val `/s*` : P0[Any] = ` \n+` | ` *`
 
   case class LiftToken[F[_]: Functor, A](point: F[A]) extends Token[F] {
     override def as[T](v: T): F[T] = Functor[F].as(point, v)
diff --git a/parser/src/main/scala/aqua/parser/lexer/TypeToken.scala b/parser/src/main/scala/aqua/parser/lexer/TypeToken.scala
index d3e41bf1..ec94d6e3 100644
--- a/parser/src/main/scala/aqua/parser/lexer/TypeToken.scala
+++ b/parser/src/main/scala/aqua/parser/lexer/TypeToken.scala
@@ -6,8 +6,8 @@ import aqua.parser.lift.LiftParser._
 import aqua.types.ScalarType
 import cats.Comonad
 import cats.parse.{Parser => P}
-import cats.syntax.functor._
 import cats.syntax.comonad._
+import cats.syntax.functor._
 
 sealed trait TypeToken[F[_]] extends Token[F]
 sealed trait DataTypeToken[F[_]] extends TypeToken[F]
@@ -93,7 +93,9 @@ object ArrowTypeToken {
     }
 
   def `arrowWithNames`[F[_]: LiftParser: Comonad]: P[ArrowTypeToken[F]] =
-    ((`(`.lift ~ comma0(Name.p[F] *> ` : ` *> DataTypeToken.`datatypedef`) <* `)`) ~
+    (((`(`.lift <* `/s*`) ~ comma0(
+      (Name.p[F] *> ` : ` *> DataTypeToken.`datatypedef`).surroundedBy(`/s*`)
+    ) <* (`/s*` *> `)`)) ~
       (` -> ` *> DataTypeToken.`datatypedef`).?).map { case ((point, args), res) =>
       ArrowTypeToken(point, args, res)
     }
diff --git a/parser/src/test/scala/aqua/parser/FuncExprSpec.scala b/parser/src/test/scala/aqua/parser/FuncExprSpec.scala
index 5b4f1b86..51ca4b19 100644
--- a/parser/src/test/scala/aqua/parser/FuncExprSpec.scala
+++ b/parser/src/test/scala/aqua/parser/FuncExprSpec.scala
@@ -116,6 +116,14 @@ class FuncExprSpec extends AnyFlatSpec with Matchers with AquaSpec {
     parser[Id]().parseAll(script).value.toEither shouldBe Symbol("left")
   }
 
+  "function with multiline definitions" should "parse without error" in {
+    val script =
+      """func tryGen(a: string,
+        |            b: string)""".stripMargin
+
+    FuncExpr.p[Id].parseAll(script) shouldBe Symbol("right")
+  }
+
   "function with root expression without children" should "parse with error" in {
     val script =
       """func tryGen() -> bool: