diff --git a/librz/include/rz_heap_glibc.h b/librz/include/rz_heap_glibc.h
index 7a4fdd3619..93be59a2e2 100644
--- a/librz/include/rz_heap_glibc.h
+++ b/librz/include/rz_heap_glibc.h
@@ -117,6 +117,7 @@ typedef RzHeapChunk32 *mchunkptr32;
 typedef struct rz_malloc_state_32 {
 	int mutex; /* serialized access */
 	int flags; /* flags */
+	int have_fastchunks; /* new free blocks in fastbin chunks? */
 	ut32 fastbinsY[NFASTBINS]; /* array of fastchunks */
 	ut32 top; /* top chunk's base addr */
 	ut32 last_remainder; /* remainder top chunk's addr */
@@ -132,6 +133,7 @@ typedef struct rz_malloc_state_32 {
 typedef struct rz_malloc_state_64 {
 	int mutex; /* serialized access */
 	int flags; /* flags */
+	int have_fastchunks; /* new free blocks in fastbin chunks? */
 	ut64 fastbinsY[NFASTBINS]; /* array of fastchunks */
 	ut64 top; /* top chunk's base addr */
 	ut64 last_remainder; /* remainder top chunk's addr */
diff --git a/test/db/archos/linux-x64/dbg_dmh b/test/db/archos/linux-x64/dbg_dmh
index 0296d9b53c..95ef8b0071 100644
--- a/test/db/archos/linux-x64/dbg_dmh
+++ b/test/db/archos/linux-x64/dbg_dmh
@@ -19,18 +19,16 @@ FILE=bins/elf/simple_malloc_x86_64
 ARGS=-d
 CMDS=<<EOF
 dcu main
-dmh
+dmh | tail -n 2
 ?e ----
 7dso
-dmh
+dmh | tail -n 3
 EOF
-REGEXP_FILTER_OUT=(status=[a-z,[0]+)|(size=0x[a-f0-9]+)|-+|\n|[()]|Arena|Chunk
+REGEXP_FILTER_OUT=(status=[a-z,[0]+)|(size=0x[a-f0-9]+)|-+|\n|[()]|Chunk
 EXPECT=<<EOF
-Arena
 Chunk(status=allocated,size=0x11c10)
 Chunk(status=free,size=0xf160)
 ----
-Arena
 Chunk(status=allocated,size=0x11c10)
 Chunk(status=allocated,size=0x20)
 Chunk(status=free,size=0xf140)