diff --git a/Sources/iron/iron_armpack.c b/Sources/iron/iron_armpack.c
index 2ddafeb4..fc993173 100644
--- a/Sources/iron/iron_armpack.c
+++ b/Sources/iron/iron_armpack.c
@@ -9,8 +9,8 @@ static const int PTR_SIZE = 8;
 static uint32_t di; // Decoded index
 static uint32_t ei; // Encoded index
 static uint32_t bottom; // Decoded bottom
-static void *decoded;
-static void *encoded;
+static uint8_t *decoded;
+static uint8_t *encoded;
 static uint32_t capacity;
 static uint32_t string_length;
 static uint32_t array_count;
diff --git a/Sources/iron/iron_armpack.h b/Sources/iron/iron_armpack.h
index e6889d3b..3e350ad2 100644
--- a/Sources/iron/iron_armpack.h
+++ b/Sources/iron/iron_armpack.h
@@ -6,6 +6,14 @@
 
 #include <stdint.h>
 
+#ifdef __GNUC__
+#define PACK(__Declaration__) __Declaration__ __attribute__((__packed__))
+#endif
+
+#ifdef _MSC_VER
+#define PACK(__Declaration__) __pragma(pack(push, 1)) __Declaration__ __pragma(pack(pop))
+#endif
+
 void *armpack_decode(void *encoded, uint32_t len);
 
 void armpack_encode_start(void *encoded);
diff --git a/Sources/zui/zui.h b/Sources/zui/zui.h
index 867a1754..316db876 100644
--- a/Sources/zui/zui.h
+++ b/Sources/zui/zui.h
@@ -6,6 +6,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include "../iron/iron_armpack.h"
 #include "../g2/g2.h"
 
 #define ZUI_LAYOUT_VERTICAL 0
@@ -97,19 +98,19 @@ typedef struct zui_text_extract {
 	char uncolored[128];
 } zui_text_extract_t;
 
-typedef struct zui_coloring {
+typedef PACK(struct zui_coloring {
 	uint32_t color;
 	char **start;
 	int start_count;
 	char *end;
 	bool separated;
-}__attribute__((packed)) zui_coloring_t;
+}) zui_coloring_t;
 
-typedef struct zui_text_coloring {
+typedef PACK(struct zui_text_coloring {
 	zui_coloring_t **colorings;
 	int colorings_count;
 	uint32_t default_color;
-}__attribute__((packed)) zui_text_coloring_t;
+}) zui_text_coloring_t;
 
 typedef struct zui {
 	bool is_scrolling; // Use to limit other activities
diff --git a/Sources/zui/zui_nodes.h b/Sources/zui/zui_nodes.h
index c488b3d0..cce0c7ec 100644
--- a/Sources/zui/zui_nodes.h
+++ b/Sources/zui/zui_nodes.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "zui.h"
+#include "../iron/iron_armpack.h"
 
 typedef struct zui_canvas_control {
 	float pan_x;
@@ -8,7 +9,7 @@ typedef struct zui_canvas_control {
 	float zoom;
 } zui_canvas_control_t;
 
-typedef struct zui_node_socket {
+typedef PACK(struct zui_node_socket {
 	int id;
 	int node_id;
 	char *name;
@@ -20,9 +21,9 @@ typedef struct zui_node_socket {
 	float max;
 	float precision;
 	int display;
-}__attribute__((packed)) zui_node_socket_t;
+}) zui_node_socket_t;
 
-typedef struct zui_node_button {
+typedef PACK(struct zui_node_button {
 	char *name;
 	char *type;
 	int output;
@@ -34,9 +35,9 @@ typedef struct zui_node_button {
 	float max;
 	float precision;
 	float height;
-}__attribute__((packed)) zui_node_button_t;
+}) zui_node_button_t;
 
-typedef struct zui_node {
+typedef PACK(struct zui_node {
 	int id;
 	char *name;
 	char *type;
@@ -50,17 +51,17 @@ typedef struct zui_node {
 	zui_node_button_t **buttons;
 	int buttons_count;
 	int width; // float width
-}__attribute__((packed)) zui_node_t;
+}) zui_node_t;
 
-typedef struct zui_node_link {
+typedef PACK(struct zui_node_link {
 	int id;
 	int from_id;
 	int from_socket;
 	int to_id;
 	int to_socket;
-}__attribute__((packed)) zui_node_link_t;
+}) zui_node_link_t;
 
-typedef struct zui_node_canvas {
+typedef PACK(struct zui_node_canvas {
 	char *name;
 	zui_node_t **nodes;
 	int nodes_capacity; // 128
@@ -68,7 +69,7 @@ typedef struct zui_node_canvas {
 	zui_node_link_t **links;
 	int links_capacity; // 256
 	int links_count;
-}__attribute__((packed)) zui_node_canvas_t;
+}) zui_node_canvas_t;
 
 typedef struct zui_nodes {
 	bool nodes_drag;