diff --git a/arch/z80/include/ez80/inttypes.h b/arch/z80/include/ez80/inttypes.h
index fbf9d9e8231..aa651cba0a4 100644
--- a/arch/z80/include/ez80/inttypes.h
+++ b/arch/z80/include/ez80/inttypes.h
@@ -114,10 +114,12 @@
 
 #  define INT8_C(x)   x
 #  define INT16_C(x)  x
+#  define INT24_C(x)  x
 #  define INT32_C(x)  x ## l
 
 #  define UINT8_C(x)  x
 #  define UINT16_C(x) x
+#  define UINT24_C(x) x
 #  define UINT32_C(x) x ## ul
 
 #else
@@ -190,10 +192,12 @@
 
 #  define INT8_C(x)   x
 #  define INT16_C(x)  x
+#  define INT24_C(x)  x
 #  define INT32_C(x)  x ## l
 
 #  define UINT8_C(x)  x
 #  define UINT16_C(x) x
+#  define UINT24_C(x) x
 #  define UINT32_C(x) x ## ul
 #endif
 
diff --git a/arch/z80/include/z180/inttypes.h b/arch/z80/include/z180/inttypes.h
index 7ee00a3a007..81e72dc8efd 100644
--- a/arch/z80/include/z180/inttypes.h
+++ b/arch/z80/include/z180/inttypes.h
@@ -112,10 +112,12 @@
 
 #define INT8_C(x)   x
 #define INT16_C(x)  x
+#define INT24_C(x)  x
 #define INT32_C(x)  x ## l
 
 #define UINT8_C(x)  x
 #define UINT16_C(x) x
+#define UINT24_C(x) x
 #define UINT32_C(x) x ## ul
 
 #endif /* __ARCH_Z80_INCLUDE_Z180_INTTYPES_H */
diff --git a/arch/z80/include/z8/inttypes.h b/arch/z80/include/z8/inttypes.h
index 2b157bd707b..5ea46104583 100644
--- a/arch/z80/include/z8/inttypes.h
+++ b/arch/z80/include/z8/inttypes.h
@@ -112,10 +112,12 @@
 
 #define INT8_C(x)   x
 #define INT16_C(x)  x
+#define INT24_C(x)  x
 #define INT32_C(x)  x ## l
 
 #define UINT8_C(x)  x
 #define UINT16_C(x) x
+#define UINT24_C(x) x
 #define UINT32_C(x) x ## ul
 
 #endif /* __ARCH_Z80_INCLUDE_Z8_INTTYPES_H */
diff --git a/arch/z80/include/z80/inttypes.h b/arch/z80/include/z80/inttypes.h
index 52c2041d9d7..37495fd7793 100644
--- a/arch/z80/include/z80/inttypes.h
+++ b/arch/z80/include/z80/inttypes.h
@@ -112,10 +112,12 @@
 
 #define INT8_C(x)   x
 #define INT16_C(x)  x
+#define INT24_C(x)  x
 #define INT32_C(x)  x ## l
 
 #define UINT8_C(x)  x
 #define UINT16_C(x) x
+#define UINT24_C(x) x
 #define UINT32_C(x) x ## ul
 
 #endif /* __ARCH_Z80_INCLUDE_Z80_INTTYPES_H */