diff --git a/include/zephyr/sw_isr_table.h b/include/zephyr/sw_isr_table.h
index eb3e7ab4310..45d26d809c1 100644
--- a/include/zephyr/sw_isr_table.h
+++ b/include/zephyr/sw_isr_table.h
@@ -211,11 +211,10 @@ extern struct z_shared_isr_table_entry z_shared_sw_isr_table[];
 #define Z_ISR_DECLARE_C(irq, flags, func, param, counter) \
 	_Z_ISR_DECLARE_C(irq, flags, func, param, counter)
 
-#define _Z_ISR_DECLARE_C(irq, flags, func, param, counter)                                \
-	_Z_ISR_TABLE_ENTRY(irq, func, param, _MK_ISR_ELEMENT_SECTION(counter));           \
-	static Z_DECL_ALIGN(struct _isr_list_sname) Z_GENERIC_SECTION(.intList)           \
-		__used _MK_ISR_NAME(func, counter) =                                      \
-		{irq, flags, _MK_ISR_ELEMENT_SECTION(counter)}
+#define _Z_ISR_DECLARE_C(irq, flags, func, param, counter)                                         \
+	_Z_ISR_TABLE_ENTRY(irq, func, param, _MK_ISR_ELEMENT_SECTION(counter));                    \
+	static Z_DECL_ALIGN(struct _isr_list_sname) Z_GENERIC_SECTION(.intList) __used             \
+	_MK_ISR_NAME(func, counter) = {irq, flags, {_MK_ISR_ELEMENT_SECTION(counter)}}
 
 /* Create an entry for _isr_table to be then placed by the linker.
  * An instance of struct _isr_list which gets put in the .intList