2 files changed, 3 insertions, 3 deletions
diff --git a/testhal/STM32/STM32F3xx/WDG/Makefile b/testhal/STM32/STM32F3xx/WDG/Makefile
index c01cfa725..fe9e06861 100644
--- a/testhal/STM32/STM32F3xx/WDG/Makefile
+++ b/testhal/STM32/STM32F3xx/WDG/Makefile
@@ -5,7 +5,7 @@
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16
+  USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
 endif
 
 # C specific options here (added to USE_OPT).
diff --git a/testhal/STM32/STM32F3xx/WDG/main.c b/testhal/STM32/STM32F3xx/WDG/main.c
index aeec0e35a..5c9cb11a5 100644
--- a/testhal/STM32/STM32F3xx/WDG/main.c
+++ b/testhal/STM32/STM32F3xx/WDG/main.c
@@ -18,10 +18,10 @@
 #include "hal.h"
 
 /*
- * Watchdog deadline set to one second (LSI=40000 / 4 / 1000).
+ * Watchdog deadline set to more than one second (LSI=40000 / (64 * 1000)).
  */
 static const WDGConfig wdgcfg = {
-  STM32_IWDG_PR_4,
+  STM32_IWDG_PR_64,
   STM32_IWDG_RL(1000),
   STM32_IWDG_WIN_DISABLED
 };