diff --git a/libs/ast/source/print.cpp b/libs/ast/source/print.cpp
index 913ee3a..3cb639b 100644
--- a/libs/ast/source/print.cpp
+++ b/libs/ast/source/print.cpp
@@ -52,7 +52,7 @@ namespace pslang::ast
 
 			void apply(function_type const & type)
 			{
-				if (type.arguments.size() == 1)
+				if (type.arguments.size() == 1 && !std::get_if<function_type>(type.arguments[0].get()))
 				{
 					apply(*type.arguments.front());
 					out << " -> ";
diff --git a/libs/types/source/print.cpp b/libs/types/source/print.cpp
index cf1a62c..774e997 100644
--- a/libs/types/source/print.cpp
+++ b/libs/types/source/print.cpp
@@ -87,7 +87,7 @@ namespace pslang::types
 
 			void apply(function_type const & type)
 			{
-				if (type.arguments.size() == 1)
+				if (type.arguments.size() == 1 && !is_function_type(*type.arguments[0]))
 				{
 					apply(*type.arguments.front());
 					out << " -> ";
diff --git a/plans.txt b/plans.txt
index 5bf4e82..c31087b 100644
--- a/plans.txt
+++ b/plans.txt
@@ -40,3 +40,7 @@ General backlog:
 * Mutually recursive structs (relevant only with pointers)
 * Empty array expression
 * Calling functions as methods
+* Replace std::runtime_error with appropriate custom exception types
+* Replace std::ostringstream with std::format
+* TEST COVERAGE!!!
+* Separate actual AST from pre-AST (the one before indentation & scoping is resolved)