diff --git a/nuttx-configs/px4-stm32f4discovery/scripts/ld.script b/nuttx-configs/px4-stm32f4discovery/scripts/ld.script
index 26c26579c0..dadd515579 100644
--- a/nuttx-configs/px4-stm32f4discovery/scripts/ld.script
+++ b/nuttx-configs/px4-stm32f4discovery/scripts/ld.script
@@ -130,6 +130,7 @@ SECTIONS
 		*(.bss .bss.*)
 		*(.gnu.linkonce.b.*)
 		*(COMMON)
+		. = ALIGN(4);
 		_ebss = ABSOLUTE(.);
 	} > sram