diff --git a/radio/src/targets/common/arm/stm32/f2/CMakeLists.txt b/radio/src/targets/common/arm/stm32/f2/CMakeLists.txt
index 97ec2f376..510b7154b 100644
--- a/radio/src/targets/common/arm/stm32/f2/CMakeLists.txt
+++ b/radio/src/targets/common/arm/stm32/f2/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(CPU_FAMILY STM32)
 set(MCU cortex-m3)
-set(FPU_FLAGS "")
+set(FPU_FLAGS "-mfloat-abi=soft")
 
 if(NOT NATIVE_BUILD)