diff --git a/include/libopencm3/stm32/f0/iwdg.h b/include/libopencm3/stm32/f0/iwdg.h
new file mode 100644
index 00000000..f0d76655
--- /dev/null
+++ b/include/libopencm3/stm32/f0/iwdg.h
@@ -0,0 +1,51 @@
+/** @defgroup iwdg_defines IWDG Defines
+ *
+ * @brief Defined Constants and Types for the STM32F0xx Independent Watchdog
+ * Timer
+ *
+ * @ingroup STM32F0xx_defines
+ *
+ * @version 1.0.0
+ *
+ * @date 18 August 2012
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Thomas Otto
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see .
+ */
+
+#ifndef LIBOPENCM3_IWDG_H
+#define LIBOPENCM3_IWDG_H
+
+#include
+#include
+
+/* --- IWDG registers ------------------------------------------------------ */
+
+/* Key Register (IWDG_WINR) */
+#define IWDG_WINR MMIO32(IWDG_BASE + 0x10)
+
+/* --- IWDG_SR values ------------------------------------------------------ */
+
+/* WVU: Watchdog counter window value update */
+#define IWDG_SR_WVU (1 << 2)
+
+
+#endif
+
diff --git a/include/libopencm3/stm32/iwdg.h b/include/libopencm3/stm32/iwdg.h
index dcd1a6c7..cfe8aadd 100644
--- a/include/libopencm3/stm32/iwdg.h
+++ b/include/libopencm3/stm32/iwdg.h
@@ -16,8 +16,9 @@
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see .
*/
-
-#if defined(STM32F1)
+#if defined(STM32F0)
+# include
+#elif defined(STM32F1)
# include
#elif defined(STM32F2)
# include
diff --git a/lib/stm32/f0/Makefile b/lib/stm32/f0/Makefile
index 282d0675..bf812d41 100644
--- a/lib/stm32/f0/Makefile
+++ b/lib/stm32/f0/Makefile
@@ -36,7 +36,7 @@ ARFLAGS = rcs
OBJS = flash.o rcc.o usart.o
OBJS += gpio_common_all.o gpio_common_f0234.o crc_common_all.o \
- pwr_common_all.o
+ pwr_common_all.o iwdg_common_all.o
VPATH += ../../usb:../:../../cm3:../common