diff --git a/hw/bsp/stm32f4/family.mk b/hw/bsp/stm32f4/family.mk
index 3da4f7bf8..e8352bad7 100644
--- a/hw/bsp/stm32f4/family.mk
+++ b/hw/bsp/stm32f4/family.mk
@@ -27,8 +27,8 @@ GCC_CFLAGS += \
 GCC_CFLAGS += -Wno-error=cast-align
 
 # IAR Flags
-IAR_CFLAGS += --cpu cortex-m4
-IAR_ASFLAGS += --cpu cortex-m4
+IAR_CFLAGS += --cpu cortex-m4 --fpu VFPv4
+IAR_ASFLAGS += --cpu cortex-m4 --fpu VFPv4
 
 # -----------------
 # Sources & Include
diff --git a/hw/bsp/stm32f7/family.mk b/hw/bsp/stm32f7/family.mk
index 733769d8b..781b8bb18 100644
--- a/hw/bsp/stm32f7/family.mk
+++ b/hw/bsp/stm32f7/family.mk
@@ -40,8 +40,8 @@ GCC_CFLAGS += \
 GCC_CFLAGS += -Wno-error=shadow -Wno-error=cast-align
 
 # IAR Flags
-IAR_CFLAGS += --cpu cortex-m7
-IAR_ASFLAGS += --cpu cortex-m7
+IAR_CFLAGS += --cpu cortex-m7 --fpu VFPv5_D16
+IAR_ASFLAGS += --cpu cortex-m7 --fpu VFPv5_D16
 
 # -----------------
 # Sources & Include