diff --git a/src/compiler/llvm_codegen_stmt.c b/src/compiler/llvm_codegen_stmt.c
index 84a65aecc..63ebbdec2 100644
--- a/src/compiler/llvm_codegen_stmt.c
+++ b/src/compiler/llvm_codegen_stmt.c
@@ -1252,8 +1252,7 @@ LLVMValueRef llvm_emit_string_const(GenContext *c, const char *str, const char *
 
 LLVMValueRef llvm_emit_empty_string_const(GenContext *c)
 {
-	LLVMValueRef data[2] = { LLVMConstNull(c->char_ptr_type), llvm_const_int(c, type_usz, 0) };
-	return llvm_get_struct_named(c->chars_type, data, 2);
+	return LLVMConstNull(c->chars_type);
 }
 
 LLVMValueRef llvm_emit_zstring(GenContext *c, const char *str)
diff --git a/src/compiler/sema_stmts.c b/src/compiler/sema_stmts.c
index 469de3af7..65e488919 100644
--- a/src/compiler/sema_stmts.c
+++ b/src/compiler/sema_stmts.c
@@ -82,7 +82,7 @@ static inline bool sema_analyse_assert_stmt(SemaContext *context, Ast *statement
 	if (message_expr)
 	{
 		if (!sema_analyse_expr(context, message_expr)) return false;
-		if (!expr_is_const_string(message_expr)) RETURN_SEMA_ERROR(message_expr, "Expected a string as the error message.");
+		if (!expr_is_const_string(message_expr)) RETURN_SEMA_ERROR(message_expr, "Expected a constant string as the error message.");
 		FOREACH_BEGIN(Expr *e, statement->assert_stmt.args)
 			if (!sema_analyse_expr(context, e)) return false;
 		FOREACH_END();
diff --git a/src/version.h b/src/version.h
index f85e77f2b..ca688fa15 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define COMPILER_VERSION "0.4.539"
\ No newline at end of file
+#define COMPILER_VERSION "0.4.540"
\ No newline at end of file