diff --git a/artiq/firmware/satman/main.rs b/artiq/firmware/satman/main.rs
index bb20c5450..f2f616bc4 100644
--- a/artiq/firmware/satman/main.rs
+++ b/artiq/firmware/satman/main.rs
@@ -274,7 +274,7 @@ pub extern fn main() -> i32 {
         }
         ALLOC.add_range(&mut _fheap, &mut _eheap);
 
-        static mut LOG_BUFFER: [u8; 65536] = [0; 65536];
+        static mut LOG_BUFFER: [u8; 1024] = [0; 1024];
         logger_artiq::BufferLogger::new(&mut LOG_BUFFER[..]).register(startup);
         0
     }
diff --git a/artiq/firmware/satman/satman.ld b/artiq/firmware/satman/satman.ld
index f6e4c6a6a..3766b38d6 100644
--- a/artiq/firmware/satman/satman.ld
+++ b/artiq/firmware/satman/satman.ld
@@ -46,10 +46,10 @@ SECTIONS
         _ebss = .;
     } > main_ram
 
-    .stack ALIGN(0x1000) :
+    .stack :
     {
         _estack = .;
-        . += 0x4000;
+        . += 0x1000;
         _fstack = . - 4;
     } > main_ram