diff --git a/portable/GCC/ARM_CA53_64_BIT/portASM.S b/portable/GCC/ARM_CA53_64_BIT/portASM.S
index 47f7c7391..31d7ef9da 100644
--- a/portable/GCC/ARM_CA53_64_BIT/portASM.S
+++ b/portable/GCC/ARM_CA53_64_BIT/portASM.S
@@ -415,7 +415,7 @@ ullPortTaskHasFPUContextConst: .dword ullPortTaskHasFPUContext
 
 ullICCPMRConst: .dword ullICCPMR
 ullMaxAPIPriorityMaskConst: .dword ullMaxAPIPriorityMask
-vApplicationIRQHandlerConst: .word vApplicationIRQHandler
+vApplicationIRQHandlerConst: .dword vApplicationIRQHandler
 ullPortInterruptNestingConst: .dword ullPortInterruptNesting
 ullPortYieldRequiredConst: .dword ullPortYieldRequired
 ullICCIARConst:	.dword ullICCIAR