diff --git a/furi/core/memmgr_heap.c b/furi/core/memmgr_heap.c
index fd0d1df5e..630e26bd9 100644
--- a/furi/core/memmgr_heap.c
+++ b/furi/core/memmgr_heap.c
@@ -187,7 +187,11 @@ void* pvPortMalloc(size_t xSize) {
     // allocate block
     void* data = tlsf_malloc(tlsf, xSize);
     if(data == NULL) {
-        furi_crash("out of memory");
+        if(xSize == 0) {
+            furi_crash("malloc(0)");
+        } else {
+            furi_crash("out of memory");
+        }
     }
 
     // update heap usage
diff --git a/targets/f18/api_symbols.csv b/targets/f18/api_symbols.csv
index 72116ccfd..79ad30648 100644
--- a/targets/f18/api_symbols.csv
+++ b/targets/f18/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,60.5,,
+Version,+,61.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -1980,7 +1980,7 @@ Function,+,memmgr_heap_disable_thread_trace,void,FuriThreadId
 Function,+,memmgr_heap_enable_thread_trace,void,FuriThreadId
 Function,+,memmgr_heap_get_max_free_block,size_t,
 Function,+,memmgr_heap_get_thread_memory,size_t,FuriThreadId
-Function,+,memmgr_heap_printf_free_blocks,void,
+Function,+,memmgr_heap_walk_blocks,void,"BlockWalker, void*"
 Function,-,memmgr_pool_get_free,size_t,
 Function,-,memmgr_pool_get_max_block,size_t,
 Function,+,memmove,void*,"void*, const void*, size_t"
diff --git a/targets/f7/api_symbols.csv b/targets/f7/api_symbols.csv
index 4ddff921b..506a267ce 100644
--- a/targets/f7/api_symbols.csv
+++ b/targets/f7/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,60.5,,
+Version,+,61.0,,
 Header,+,applications/drivers/subghz/cc1101_ext/cc1101_ext_interconnect.h,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
@@ -2371,7 +2371,7 @@ Function,+,memmgr_heap_disable_thread_trace,void,FuriThreadId
 Function,+,memmgr_heap_enable_thread_trace,void,FuriThreadId
 Function,+,memmgr_heap_get_max_free_block,size_t,
 Function,+,memmgr_heap_get_thread_memory,size_t,FuriThreadId
-Function,+,memmgr_heap_printf_free_blocks,void,
+Function,+,memmgr_heap_walk_blocks,void,"BlockWalker, void*"
 Function,-,memmgr_pool_get_free,size_t,
 Function,-,memmgr_pool_get_max_block,size_t,
 Function,+,memmove,void*,"void*, const void*, size_t"