1 files changed, 3 insertions, 1 deletions

diff --git a/quantum/split_common/i2c.h b/quantum/split_common/i2c.h
index b4c72bde0..b3cbe8c82 100644
--- a/quantum/split_common/i2c.h
+++ b/quantum/split_common/i2c.h
@@ -25,7 +25,9 @@
 #define SLAVE_BUFFER_SIZE 0x20
 
 // i2c SCL clock frequency
-#define SCL_CLOCK  400000L
+#ifndef SCL_CLOCK
+#define SCL_CLOCK  100000L
+#endif
 
 // Support 8bits right now (8 cols) will need to edit to take higher (code exists in delta split?)
 extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];