1 files changed, 7 insertions, 0 deletions
diff --git a/lib/python/qmk/cli/lint.py b/lib/python/qmk/cli/lint.py
index 96593ed69b..af057b4110 100644
--- a/lib/python/qmk/cli/lint.py
+++ b/lib/python/qmk/cli/lint.py
@@ -116,6 +116,13 @@ def lint(cli):
             if not keymap_check(kb, cli.config.lint.keymap):
                 ok = False
 
+        # Check if all non-data driven macros exist in <keyboard.h>
+        for layout, data in keyboard_info['layouts'].items():
+            # Matrix data should be a list with exactly two integers: [0, 1]
+            if not data['c_macro'] and not all('matrix' in key_data.keys() or len(key_data) == 2 or all(isinstance(n, int) for n in key_data) for key_data in data['layout']):
+                cli.log.error(f'{kb}: "{layout}" has no "matrix" definition in either "info.json" or "<keyboard>.h"!')
+                ok = False
+
         # Report status
         if not ok:
             failed.append(kb)