diff --git a/lsteamclient/gen_wrapper.py b/lsteamclient/gen_wrapper.py
index 0eeb0fe2..3c9564e5 100755
--- a/lsteamclient/gen_wrapper.py
+++ b/lsteamclient/gen_wrapper.py
@@ -1521,9 +1521,11 @@ with open(u"unixlib_generated.h", "w") as file:
     out(u'#endif /* __cplusplus */\n')
     out(u'\n')
 
+    out(u'#include <pshpack1.h>\n\n')
     for klass, method in all_methods:
         sdkver = klass._sdkver
         method.write_params(out)
+    out(u'#include <poppack.h>\n\n')
 
     out(u'enum unix_funcs\n')
     out(u'{\n')
diff --git a/lsteamclient/unixlib.h b/lsteamclient/unixlib.h
index 021f4a66..a1d71aa8 100644
--- a/lsteamclient/unixlib.h
+++ b/lsteamclient/unixlib.h
@@ -21,6 +21,8 @@ extern "C"
 #define PATH_MAX 4096
 extern char g_tmppath[PATH_MAX];
 
+#include <pshpack1.h>
+
 struct steamclient_init_params
 {
     const char *steam_app_id;
@@ -211,6 +213,8 @@ struct networking_message
     };
 };
 
+#include <poppack.h>
+
 typedef NTSTATUS (*unixlib_entry_t)( void *args );
 extern const unixlib_entry_t __wine_unix_call_funcs[];
 
diff --git a/lsteamclient/unixlib_generated.h b/lsteamclient/unixlib_generated.h
index 9a0d1e8e..c07e9648 100644
--- a/lsteamclient/unixlib_generated.h
+++ b/lsteamclient/unixlib_generated.h
@@ -7,6 +7,8 @@
 extern "C" {
 #endif /* __cplusplus */
 
+#include <pshpack1.h>
+
 struct ISteamAppList_STEAMAPPLIST_INTERFACE_VERSION001_GetNumInstalledApps_params
 {
     struct u_steam_iface *linux_side;
@@ -45557,6 +45559,8 @@ struct ISteamUtils_SteamUtils010_DismissFloatingGamepadTextInput_params
     int8_t _ret;
 };
 
+#include <poppack.h>
+
 enum unix_funcs
 {
     unix_steamclient_init,