diff --git a/os/common/ports/ARMCMx/compilers/GCC/rules.mk b/os/common/ports/ARMCMx/compilers/GCC/rules.mk
index 7b1cfb68a..249793fcd 100644
--- a/os/common/ports/ARMCMx/compilers/GCC/rules.mk
+++ b/os/common/ports/ARMCMx/compilers/GCC/rules.mk
@@ -197,7 +197,7 @@ endif
 
 $(ASMXOBJS) : $(OBJDIR)/%.o : %.S Makefile
 ifeq ($(USE_VERBOSE_COMPILE),yes)
-	@echo 
+	@echo
 	$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
 else
 	@echo Compiling $(<F)