diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -85,7 +85,7 @@ CDEFS+=-DHSE_VALUE=8000000
 
 
 #EMZ Optimized: 
-MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections 
+MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections -mfloat-abi=soft
 
 # Default:  MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections