diff --git a/arch/xtensa/core/Makefile b/arch/xtensa/core/Makefile
index 24772e76dcb..5eec07099d8 100644
--- a/arch/xtensa/core/Makefile
+++ b/arch/xtensa/core/Makefile
@@ -1,5 +1,5 @@
 ccflags-y += -I$(srctree)/kernel/unified/include
-asflags-y += -I$(srctree)/kernel/unified/include --longcalls
+asflags-y += -I$(srctree)/kernel/unified/include -mlongcalls
 
 ifdef CONFIG_ATOMIC_OPERATIONS_C
 # Use C routines from kernel/atomic_c.c
diff --git a/arch/xtensa/core/startup/Makefile b/arch/xtensa/core/startup/Makefile
index 1a28cd76b6f..4db6f94d34f 100644
--- a/arch/xtensa/core/startup/Makefile
+++ b/arch/xtensa/core/startup/Makefile
@@ -1,2 +1,2 @@
-asflags-y := -c -xassembler-with-cpp $(XTENSA_INCLUDE) $(flagBoardType) -mtext-section-literals --longcalls
+asflags-y := -c -xassembler-with-cpp $(XTENSA_INCLUDE) $(flagBoardType) -mtext-section-literals -mlongcalls
 obj-y = reset-vector.o