diff --git a/boards/arm/stm32/stm32f4discovery/src/stm32_romfs_initialize.c b/boards/arm/stm32/stm32f4discovery/src/stm32_romfs_initialize.c
index 9f63db65add..bcca7bded0a 100644
--- a/boards/arm/stm32/stm32f4discovery/src/stm32_romfs_initialize.c
+++ b/boards/arm/stm32/stm32f4discovery/src/stm32_romfs_initialize.c
@@ -93,7 +93,8 @@ __asm__ (
 "romfs_data_end:\n"
     ".globl   romfs_data_size\n"
 "romfs_data_size:\n"
-    ".word romfs_data_end - romfs_data_begin\n");
+    ".word romfs_data_end - romfs_data_begin\n"
+    ".previous\n");
 
 extern const char romfs_data_begin;
 extern const char romfs_data_end;