diff --git a/apriltag_imu/sim/README.md b/apriltag_imu/sim/README.md
index 73d437e30a359676507923201b7e740bef1f4d69..7ef95dde1791cc8ae72f43867c53609c55780846 100644
--- a/apriltag_imu/sim/README.md
+++ b/apriltag_imu/sim/README.md
@@ -4,9 +4,9 @@
 
 - **wave.bag:** Bended circle with sinusoidal translation in Z. IMU without noise and not biased. (old name circleXYZ.bag)
 
-- **wave_noiseXYZ_biasY:** Bended circle with sinusoidal translation in Z. IMU with noise and biased only on Y axis (accel. and gyro.). (old name everythingBiasedX.bag)
+- **wave_noiseXYZ_biasY.bag:** Bended circle with sinusoidal translation in Z. IMU with noise and biased only on Y axis (accel. and gyro.). (old name everythingBiasedX.bag)
 
-- **wave_noiseXYZ_biasXYZ:** Bended circle with sinusoidal translation in Z. IMU with noise and biased. (old name everything.bag)
+- **wave_noiseXYZ_biasXYZ.bag:** Bended circle with sinusoidal translation in Z. IMU with noise and biased. (old name everything.bag)