diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44b2643f3..ca40c1f0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+### Known Issues:
+- Sub-GHz app is now external due to running out of space in flash, but it uses almost all available RAM. This means that:
+  - qFlipper / Mobile App cannot be used together with Sub-GHz app for now
+  - Only 20-30 signals can be kept at a time in receive history while in Read mode
+  - Opening Sub-GHz after using a few other apps may result in an out of memory warning, simply reboot and it will work again
+
 ### Added:
 - Apps:
   - Games: Checkers (by @H4W9)
diff --git a/applications/main/subghz/subghz_history.c b/applications/main/subghz/subghz_history.c
index 81ca18191..be61d3526 100644
--- a/applications/main/subghz/subghz_history.c
+++ b/applications/main/subghz/subghz_history.c
@@ -5,7 +5,8 @@
 #include <furi.h>
 
 #define SUBGHZ_HISTORY_MAX       65535 // uint16_t index max, ram limit below
-#define SUBGHZ_HISTORY_FREE_HEAP (23624 * (1 - MIN(rpc_get_sessions_count(instance->rpc), 1U)))
+// #define SUBGHZ_HISTORY_FREE_HEAP (23624 * (1 - MIN(rpc_get_sessions_count(instance->rpc), 1U)))
+#define SUBGHZ_HISTORY_FREE_HEAP (2048)
 
 #define TAG "SubGhzHistory"