diff --git a/arch/arm/src/rp2040/rp2040_i2c.c b/arch/arm/src/rp2040/rp2040_i2c.c
index 338e07eb93..e9d2cb8afb 100644
--- a/arch/arm/src/rp2040/rp2040_i2c.c
+++ b/arch/arm/src/rp2040/rp2040_i2c.c
@@ -55,7 +55,7 @@
 #define I2C_TIMEOUT  (20*1000/CONFIG_USEC_PER_TICK) /* 20 mS */
 
 #define I2C_DEFAULT_FREQUENCY 400000
-#define I2C_FIFO_MAX_SIZE	    32
+#define I2C_FIFO_MAX_SIZE	    16
 
 #define I2C_INTR_ENABLE ((RP2040_I2C_IC_INTR_STAT_R_STOP_DET) | \
                          (RP2040_I2C_IC_INTR_STAT_R_TX_ABRT)  | \