diff --git a/applications/main/subghz/subghz_history.c b/applications/main/subghz/subghz_history.c
index 5d2189d8b..f50084f86 100644
--- a/applications/main/subghz/subghz_history.c
+++ b/applications/main/subghz/subghz_history.c
@@ -1,10 +1,11 @@
 #include "subghz_history.h"
 #include <lib/subghz/receiver.h>
+#include <rpc/rpc.h>
 
 #include <furi.h>
 
 #define SUBGHZ_HISTORY_MAX 65535 // uint16_t index max, ram limit below
-#define SUBGHZ_HISTORY_FREE_HEAP 20480
+#define SUBGHZ_HISTORY_FREE_HEAP (10240 * (3 - MIN(rpc_get_sessions_count(instance->rpc), 2U)))
 #define TAG "SubGhzHistory"
 
 typedef struct {
@@ -33,6 +34,7 @@ struct SubGhzHistory {
     uint32_t code_last_hash_data;
     FuriString* tmp_string;
     SubGhzHistoryStruct* history;
+    Rpc* rpc;
 };
 
 SubGhzHistory* subghz_history_alloc(void) {
@@ -40,6 +42,7 @@ SubGhzHistory* subghz_history_alloc(void) {
     instance->tmp_string = furi_string_alloc();
     instance->history = malloc(sizeof(SubGhzHistoryStruct));
     SubGhzHistoryItemArray_init(instance->history->data);
+    instance->rpc = furi_record_open(RECORD_RPC);
     return instance;
 }
 
@@ -56,6 +59,7 @@ void subghz_history_free(SubGhzHistory* instance) {
         }
     SubGhzHistoryItemArray_clear(instance->history->data);
     free(instance->history);
+    furi_record_close(RECORD_RPC);
     free(instance);
 }
 
diff --git a/applications/services/rpc/rpc.c b/applications/services/rpc/rpc.c
index 4332c58f0..7295848f6 100644
--- a/applications/services/rpc/rpc.c
+++ b/applications/services/rpc/rpc.c
@@ -89,6 +89,7 @@ struct RpcSession {
 
 struct Rpc {
     FuriMutex* busy_mutex;
+    size_t sessions_count;
 };
 
 RpcOwner rpc_session_get_owner(RpcSession* session) {
@@ -412,6 +413,8 @@ RpcSession* rpc_session_open(Rpc* rpc, RpcOwner owner) {
 
     furi_thread_start(session->thread);
 
+    rpc->sessions_count++;
+
     return session;
 }
 
@@ -419,6 +422,8 @@ void rpc_session_close(RpcSession* session) {
     furi_assert(session);
     furi_assert(session->rpc);
 
+    session->rpc->sessions_count--;
+
     rpc_session_set_send_bytes_callback(session, NULL);
     rpc_session_set_close_callback(session, NULL);
     rpc_session_set_buffer_is_empty_callback(session, NULL);
@@ -494,3 +499,7 @@ void rpc_send_and_release_empty(RpcSession* session, uint32_t command_id, PB_Com
     rpc_send_and_release(session, &message);
     pb_release(&PB_Main_msg, &message);
 }
+
+size_t rpc_get_sessions_count(Rpc* rpc) {
+    return rpc->sessions_count;
+}
diff --git a/applications/services/rpc/rpc.h b/applications/services/rpc/rpc.h
index 863bca355..b1e7a4d47 100644
--- a/applications/services/rpc/rpc.h
+++ b/applications/services/rpc/rpc.h
@@ -134,6 +134,13 @@ size_t rpc_session_feed(RpcSession* session, uint8_t* buffer, size_t size, uint3
  */
 size_t rpc_session_get_available_size(RpcSession* session);
 
+/** Get number of open RPC sessions
+ *
+ * @param   rpc     instance
+ * @return          sessions count
+ */
+size_t rpc_get_sessions_count(Rpc* rpc);
+
 #ifdef __cplusplus
 }
 #endif
\ No newline at end of file
diff --git a/targets/f7/api_symbols.csv b/targets/f7/api_symbols.csv
index d53f71845..92bff9ced 100644
--- a/targets/f7/api_symbols.csv
+++ b/targets/f7/api_symbols.csv
@@ -2772,6 +2772,7 @@ Function,-,rintl,long double,long double
 Function,-,round,double,double
 Function,+,roundf,float,float
 Function,-,roundl,long double,long double
+Function,+,rpc_get_sessions_count,size_t,Rpc*
 Function,+,rpc_session_close,void,RpcSession*
 Function,+,rpc_session_feed,size_t,"RpcSession*, uint8_t*, size_t, uint32_t"
 Function,+,rpc_session_get_available_size,size_t,RpcSession*