diff --git a/apps/ios/SimpleX NSE/NotificationService.swift b/apps/ios/SimpleX NSE/NotificationService.swift
index 529192423..1c34796ec 100644
--- a/apps/ios/SimpleX NSE/NotificationService.swift	
+++ b/apps/ios/SimpleX NSE/NotificationService.swift	
@@ -485,6 +485,7 @@ func doStartChat() -> DBMigrationResult? {
     logger.debug("NotificationService: doStartChat")
     haskell_init_nse()
     let (_, dbStatus) = chatMigrateInit(confirmMigrations: defaultMigrationConfirmation(), backgroundMode: true)
+    logger.debug("NotificationService: doStartChat \(String(describing: dbStatus))")
     if dbStatus != .ok {
         resetChatCtrl()
         NSEChatState.shared.set(.created)
diff --git a/apps/ios/SimpleXChat/hs_init.c b/apps/ios/SimpleXChat/hs_init.c
index b597453be..83056fccf 100644
--- a/apps/ios/SimpleXChat/hs_init.c
+++ b/apps/ios/SimpleXChat/hs_init.c
@@ -25,13 +25,15 @@ void haskell_init(void) {
 }
 
 void haskell_init_nse(void) {
-    int argc = 5;
+    int argc = 7;
     char *argv[] = {
         "simplex",
         "+RTS", // requires `hs_init_with_rtsopts`
         "-A1m", // chunk size for new allocations
         "-H1m", // initial heap size
-        "-xn", // non-moving GC
+        "-F0.5", // heap growth triggering GC
+        "-Fd1", // memory return
+        "-c", // compacting garbage collector
         0
     };
     char **pargv = argv;