diff --git a/4.-Final-assembly.md b/4.-Final-assembly.md
index ab48539..d30d9ba 100644
--- a/4.-Final-assembly.md
+++ b/4.-Final-assembly.md
@@ -15,7 +15,7 @@ In this section, you'll go over how to put the two halves of the enclosure toget
 - 1x snooker ball
 
 ## Step 3: Put the top onto the base
-[![Ploopy Mouse Final Assembly YouTube Video](https://lh3.googleusercontent.com/pCK_OrN8liihaSrH5aFGFaO8p1wyzNk0m1vXkxIdAvlzxrKG-YOdHLz-Z3pFII0WMeOXBG5i6u4bKUZiLn9LpfTSFv7WwLusvEyG-CzcCXDsmvmifr1boPnBuz5LJeru3DLe4GtltQ_9LgAH17jkrYZAzp_mveubstp_sx45ecqAq6B7l4ZUvkPtHN6CXfg54p3nqcFDoa_Dy6iCjy65ZZptgRkxAkZw9v3pbXT2pwKyas58wieT-iTXmfzbQw7X2km7I5yllyMY-Fhr4oOTia2-XNjXjePcaV-ekT-ePFudMakbEKUKbihFNESPX5zqSK87Aj1qjOnfoFA4DGtpgwdtNlAANF1xV5yNNavs1bg9AC5KWrZEK9pY8-64jXsEyPd2z-u-AoBnyIaKQzlvd7kgf-L9Bvb14PCd1bjtxKcDVx1YTP3Uh_feHjrd01xz1gTQQ_Ik3uLET1R8VNAEQQoeQrt7JTmXFXz58_TgJ6ZCcrFvSxaNlQDUwQfDcLOwpmqhx1pVBFUvOUE-YN5pcMm_QLMSSl0vLptOn80AjPTljgbwAZxbM2sSCyxKybm-f94v8myJb1SikyFGmBTSMIKh8KBokNRVw_8czMOTuL2w6Q_7HYH-W7VqinDDDoX8kohDEdi69S9zDwy_wyvezsNH4Yt7hEVsYylN1tkYvD6sidnR2FY-cpITUwxo5seqTp-mnfMZh9g2VxZUfgqW4wmCd-k-6JoRUXKMBKM9649O3C0=w1130-h753-no)](https://www.youtube.com/watch?v=l6ZIF_83VuQ)
+[![Ploopy Trackball Final Assembly YouTube Video](https://lh3.googleusercontent.com/pCK_OrN8liihaSrH5aFGFaO8p1wyzNk0m1vXkxIdAvlzxrKG-YOdHLz-Z3pFII0WMeOXBG5i6u4bKUZiLn9LpfTSFv7WwLusvEyG-CzcCXDsmvmifr1boPnBuz5LJeru3DLe4GtltQ_9LgAH17jkrYZAzp_mveubstp_sx45ecqAq6B7l4ZUvkPtHN6CXfg54p3nqcFDoa_Dy6iCjy65ZZptgRkxAkZw9v3pbXT2pwKyas58wieT-iTXmfzbQw7X2km7I5yllyMY-Fhr4oOTia2-XNjXjePcaV-ekT-ePFudMakbEKUKbihFNESPX5zqSK87Aj1qjOnfoFA4DGtpgwdtNlAANF1xV5yNNavs1bg9AC5KWrZEK9pY8-64jXsEyPd2z-u-AoBnyIaKQzlvd7kgf-L9Bvb14PCd1bjtxKcDVx1YTP3Uh_feHjrd01xz1gTQQ_Ik3uLET1R8VNAEQQoeQrt7JTmXFXz58_TgJ6ZCcrFvSxaNlQDUwQfDcLOwpmqhx1pVBFUvOUE-YN5pcMm_QLMSSl0vLptOn80AjPTljgbwAZxbM2sSCyxKybm-f94v8myJb1SikyFGmBTSMIKh8KBokNRVw_8czMOTuL2w6Q_7HYH-W7VqinDDDoX8kohDEdi69S9zDwy_wyvezsNH4Yt7hEVsYylN1tkYvD6sidnR2FY-cpITUwxo5seqTp-mnfMZh9g2VxZUfgqW4wmCd-k-6JoRUXKMBKM9649O3C0=w1130-h753-no)](https://www.youtube.com/watch?v=l6ZIF_83VuQ)
 
 You might need to use a bit of force to get the two halves together.
 
@@ -29,10 +29,10 @@ Two of the holes are for the countersunk screws, and two are for the socket cap
 
 Depending on slight size variations, you might need to push the ball in with some force, but it shouldn't require a large amount of force.
 
-## Step 6: Verify that the Ploopy Mouse is working correctly
-Plug the mouse into your computer. The buttons should be clicking, and if you move the ball, it should move the cursor.
+## Step 6: Verify that the Ploopy Trackball is working correctly
+Plug the trackball into your computer. The buttons should be clicking, and if you move the ball, it should move the cursor.
 
 ## Step 7: All done!
-Congrats, you finished building the Ploopy Mouse!
+Congrats, you finished building the Ploopy Trackball!
 
 It's done! Love it, use it, but don't you dare abuse it!
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