-#if DIODE_DIRECTION == ROW2COL
-# if MATRIX_ROWS <= 8
-typedef uint8_t matrix_col_t;
-# elif MATRIX_ROWS <= 16
-typedef uint16_t matrix_col_t;
-# elif MATRIX_ROWS <= 32
-typedef uint32_t matrix_col_t;
-# else
-# error "There are too many rows."
-# endif
+#if (MATRIX_ROWS <= 8)
+typedef uint8_t matrix_col_t;
+#elif (MATRIX_ROWS <= 16)
+typedef uint16_t matrix_col_t;
+#elif (MATRIX_ROWS <= 32)
+typedef uint32_t matrix_col_t;
+#else
+#error "MATRIX_ROWS: invalid value"