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-rw-r--r--docs/config_options.md2
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diff --git a/docs/config_options.md b/docs/config_options.md
index 5344fe851f..d048d17678 100644
--- a/docs/config_options.md
+++ b/docs/config_options.md
@@ -53,6 +53,8 @@ This is a C header file that is one of the first things included, and will persi
* pins of the rows, from top to bottom
* `#define MATRIX_COL_PINS { F1, F0, B0, C7, F4, F5, F6, F7, D4, D6, B4, D7 }`
* pins of the columns, from left to right
+* `#define MATRIX_IO_DELAY 30`
+ * the delay in microseconds when between changing matrix pin state and reading values
* `#define UNUSED_PINS { D1, D2, D3, B1, B2, B3 }`
* pins unused by the keyboard for reference
* `#define MATRIX_HAS_GHOST`