diff --git a/include/drivers/nxp/crypto/caam/sec_hw_specific.h b/include/drivers/nxp/crypto/caam/sec_hw_specific.h
index a4fc022..9800793 100644
--- a/include/drivers/nxp/crypto/caam/sec_hw_specific.h
+++ b/include/drivers/nxp/crypto/caam/sec_hw_specific.h
@@ -187,9 +187,7 @@
 				((value) & JRINT_JRE)
 
  /* Macros for manipulating JR registers */
-typedef union {
-	uint64_t m_whole;
-	struct {
+typedef struct {
 #ifdef NXP_SEC_BE
 		uint32_t high;
 		uint32_t low;
@@ -197,7 +195,6 @@
 		uint32_t low;
 		uint32_t high;
 #endif
-	} m_halves;
 } ptr_addr_t;
 
 #if defined(CONFIG_PHYS_64BIT)