diff --git a/uc.c b/uc.c
index f3fa394f..be3f2a86 100644
--- a/uc.c
+++ b/uc.c
@@ -1969,6 +1969,8 @@ uc_err uc_ctl(uc_engine *uc, uc_control_type control, ...)
 
     case UC_CTL_UC_PAGE_SIZE: {
         if (rw == UC_CTL_IO_READ) {
+            
+            UC_INIT(uc);
 
             uint32_t *page_size = va_arg(args, uint32_t *);
             *page_size = uc->target_page_size;