diff --git a/drivers/nxp/crypto/caam/src/jobdesc.c b/drivers/nxp/crypto/caam/src/jobdesc.c
index 9c235af..f559c4b 100644
--- a/drivers/nxp/crypto/caam/src/jobdesc.c
+++ b/drivers/nxp/crypto/caam/src/jobdesc.c
@@ -60,8 +60,8 @@
 #ifdef CONFIG_PHYS_64BIT
 	ptr_addr_t *ptr_addr = (ptr_addr_t *) last;
 
-	ptr_addr->m_halves.high = PHYS_ADDR_HI(ptr);
-	ptr_addr->m_halves.low = PHYS_ADDR_LO(ptr);
+	ptr_addr->high = PHYS_ADDR_HI(ptr);
+	ptr_addr->low = PHYS_ADDR_LO(ptr);
 #else
 	*last = ptr;
 #endif
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)