diff --git a/src/main/drivers/compass_hmc5883l.c b/src/main/drivers/compass_hmc5883l.c
index a59186d51..6911034a7 100644
--- a/src/main/drivers/compass_hmc5883l.c
+++ b/src/main/drivers/compass_hmc5883l.c
@@ -310,7 +310,7 @@ bool hmc5883lRead(int16_t *magData)
     uint8_t buf[6];
 
     bool ack = i2cRead(MAG_ADDRESS, MAG_DATA_REGISTER, 6, buf);
-    if (ack) {
+    if (!ack) {
         return false;
     }
     // During calibration, magGain is 1.0, so the read returns normal non-calibrated values.