diff --git a/sysdata/libraries/stn/src/alloc/block_alloc.hb b/sysdata/libraries/stn/src/alloc/block_alloc.hb
index b0917bd..6f27fa4 100644
--- a/sysdata/libraries/stn/src/alloc/block_alloc.hb
+++ b/sysdata/libraries/stn/src/alloc/block_alloc.hb
@@ -1,4 +1,4 @@
-.{log} := @use("../lib.hb")
+.{log, panic} := @use("../lib.hb")
 alloc_return := @use("alloc_return.hb")
 
 /* the block size is 64 bytes, 64 blocks of 64 bytes.
@@ -17,7 +17,7 @@ BlockAlloc := struct {
 		offset := 1
 		a := 1
 		loop {
-			// a = self.state >> offset;
+			// a = self.state >> offset
 			// check if the `offset` bit is 1, if it is move to the next offset
 			if a == 1 {
 				offset += 1
@@ -26,7 +26,12 @@ BlockAlloc := struct {
 				// self it to 1 and return the ptr to the allocation
 				self.state |= a
 				// return ptr + offset * 64
-				return .(64, self.ptr + offset * 64)
+				if self.ptr != null {
+					return .(64, self.ptr + offset * 64)
+				} else {
+					// panic.panic("Allocator is not inited.\0")
+					// return .(0, null)
+				}
 			}
 			// there are only 64 blocks
 			if offset >= 64 {