diff --git a/generator.v b/generator.v
index 42dfe56..2f4a240 100644
--- a/generator.v
+++ b/generator.v
@@ -159,7 +159,7 @@ fn (mut g Generator) gen_expr(expr Expr) {
 			g.out.write_string(mangle_var(expr.name))
 		}
 		UnaryExpr {
-			g.out.write_string('${expr.ident}${expr.op}')
+			g.out.write_string('(${mangle_var(expr.ident)}${expr.op})')
 		}
 		BinaryExpr {
 			g.out.write_string('(')
diff --git a/parser.v b/parser.v
index 36d8db7..b0e7040 100644
--- a/parser.v
+++ b/parser.v
@@ -638,6 +638,8 @@ fn (mut p Parser) parse_func_decl() FuncDecl {
 			else{parse_error("Expected function return type after name when declaring ${name_tok.text}")}
 	}
 
+	p.symbols.define_func(name_tok.text, type_tok.text, Block{})
+
 	block := p.parse_block(true)
 
 	return_stmts := p.get_return_stmts_recursive(block)