index 847e584..fefa8c6 100644
--- a/src/hal/hal_lib.c
+++ b/src/hal/hal_lib.c
@@ -882,10 +882,10 @@ int hal_signal_new(const char *name, hal_type_t type)
        data_addr = shmalloc_up(sizeof(hal_bit_t));
        break;
     case HAL_S32:
-       data_addr = shmalloc_up(sizeof(hal_u32_t));
+       data_addr = shmalloc_up(sizeof(hal_s32_t));
        break;
     case HAL_U32:
-       data_addr = shmalloc_up(sizeof(hal_s32_t));
+       data_addr = shmalloc_up(sizeof(hal_u32_t));
        break;
     case HAL_FLOAT:
        data_addr = shmalloc_up(sizeof(hal_float_t));