diff --git a/src/parsing.cpp b/src/parsing.cpp
index f71e896..2d3326e 100644
--- a/src/parsing.cpp
+++ b/src/parsing.cpp
@@ -49,7 +49,7 @@ namespace parsing {
             }
         }
 
-        Result<std::optional<uint32_t>, std::string> parse_array_postfix(token::TokenStream& stream) {
+        Result<std::optional<uint32_t>, std::string> parse_array_postfix(token::TokenStream& stream, bool allow_empty) {
             token::TokenStream inner{ stream };
             try {
                 std::optional<uint32_t> returned{};
@@ -58,6 +58,9 @@ namespace parsing {
                 if (inner.peek().type == token::Type::LiteralInt) {
                     returned = std::stoi(inner.next().content);
                 }
+                if (!allow_empty && !returned.has_value()) {
+                    throw std::runtime_error("Expected array size");
+                }
                 inner.expect(token::Type::Symbol, "]");
 
                 stream.m_position = inner.m_position;
@@ -263,7 +266,7 @@ namespace parsing {
                 auto ty = parse_type(inner).unwrap();
                 auto name = inner.expect(token::Type::Ident);
 
-                auto array_postfix = parse_array_postfix(inner);
+                auto array_postfix = parse_array_postfix(inner, false);
                 while (array_postfix.ok()) {
                     auto postfix = array_postfix.unwrap();
                     if (postfix) {
@@ -276,7 +279,7 @@ namespace parsing {
                             new types::PointerType(ty)
                         };
                     }
-                    array_postfix = parse_array_postfix(inner);
+                    array_postfix = parse_array_postfix(inner, false);
                 }
 
                 std::optional<std::unique_ptr<AST::Expression>> expr = {};