diff --git a/src/main.c b/src/main.c
index 20839b6..074049a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -26,7 +26,7 @@ void i2c_scanner(struct mgos_i2c *i2c, bool dumpregs) {
 
   for (i = 0x3; i < 0x78; i++) {
     bool ret;
-    ret = mgos_i2c_read(i2c, i, NULL, 0, true);
+    ret = mgos_i2c_write(i2c, i, NULL, 0, true);
     if (ret) {
       LOG(LL_INFO, ("Found device at I2C address 0x%02x", i));
       if (dumpregs) {