diff --git a/stm-firmware/Makefile b/stm-firmware/Makefile
index 583e12f..83bf67e 100644
--- a/stm-firmware/Makefile
+++ b/stm-firmware/Makefile
@@ -96,7 +96,7 @@ $(ASOBJ):
 	@echo [AS] $@
 	$(eval OUTPATH=$(dir $@))
 	@mkdir -p $(OUTPATH)
-	$(QUIET)$(CC) $(CFLAGS) -MMD -MT $@ $(INCLUDEPATH) $(DEFINES) -o $@ $(@:$(OBJDIR)/%.S.o=%.S)	
+	$(QUIET)$(CC) $(CFLAGS) -MMD -MT $@ $(INCLUDEPATH) $(DEFINES) -o $@ $(@:$(OBJDIR)/%.S.o=%.S)
 
 
 .PHONY: qtproject clean mrproper objcopy disassemble