diff --git a/dom/media/webrtc/third_party_build/elm_rebase.sh b/dom/media/webrtc/third_party_build/elm_rebase.sh
index 270167dea365..7c0bdb9ef700 100644
--- a/dom/media/webrtc/third_party_build/elm_rebase.sh
+++ b/dom/media/webrtc/third_party_build/elm_rebase.sh
@@ -273,7 +273,7 @@ for commit in $COMMITS; do
   echo "MODIFIED_BUILD_RELATED_FILE_CNT: $MODIFIED_BUILD_RELATED_FILE_CNT"
   if [ "x$MODIFIED_BUILD_RELATED_FILE_CNT" != "x0" ]; then
     echo "Regenerate build files"
-    ./mach python python/mozbuild/mozbuild/gn_processor.py \
+    ./mach python build/gn_processor.py \
         dom/media/webrtc/third_party_build/gn-configs/webrtc.json || \
     ( echo "$GENERATION_ERROR" ; exit 1 )
 
diff --git a/dom/media/webrtc/third_party_build/gn-configs/README.md b/dom/media/webrtc/third_party_build/gn-configs/README.md
index 111d2d022e63..2d376a1b047c 100644
--- a/dom/media/webrtc/third_party_build/gn-configs/README.md
+++ b/dom/media/webrtc/third_party_build/gn-configs/README.md
@@ -6,11 +6,11 @@ the script under [WSL](https://docs.microsoft.com/en-us/windows/wsl/install).
 1. The script should be run from the top directory of our firefox tree.
 
    ```
-   ./mach python python/mozbuild/mozbuild/gn_processor.py dom/media/webrtc/third_party_build/gn-configs/webrtc.json
+   ./mach python build/gn_processor.py dom/media/webrtc/third_party_build/gn-configs/webrtc.json
    ```
 
 2. Checkin all the generated/modified files and try your build!
 
 # Adding new configurations to the build
 
-Edit the `main` function in the `python/mozbuild/mozbuild/gn_processor.py` file.
+Edit the `main` function in the `build/gn_processor.py` file.
diff --git a/dom/media/webrtc/third_party_build/loop-ff.sh b/dom/media/webrtc/third_party_build/loop-ff.sh
index ac182cf0a1bb..90b0052926aa 100644
--- a/dom/media/webrtc/third_party_build/loop-ff.sh
+++ b/dom/media/webrtc/third_party_build/loop-ff.sh
@@ -183,7 +183,7 @@ remain for this commit:
     --state-path $STATE_DIR \\
     --target-branch-head $MOZ_TARGET_UPSTREAM_BRANCH_HEAD
   # generate moz.build files (may not be necessary)
-  ./mach python python/mozbuild/mozbuild/gn_processor.py \\
+  ./mach python build/gn_processor.py \\
       $SCRIPT_DIR/gn-configs/webrtc.json
   # commit the updated moz.build files with the appropriate commit msg
   bash $SCRIPT_DIR/commit-build-file-changes.sh
@@ -222,7 +222,7 @@ BUILD.gn files are required.  Commit those changes following the instructions
 in https://wiki.mozilla.org/Media/WebRTC/libwebrtc_Update_Process#Operational_notes
 Then complete these steps:
   # generate moz.build files (may not be necessary)
-  ./mach python python/mozbuild/mozbuild/gn_processor.py \\
+  ./mach python build/gn_processor.py \\
       $SCRIPT_DIR/gn-configs/webrtc.json
   # commit the updated moz.build files with the appropriate commit msg
   bash $SCRIPT_DIR/commit-build-file-changes.sh
@@ -236,7 +236,7 @@ echo_log "Modified .gn, **/BUILD.gn, or **/*.gni files: $MODIFIED_BUILD_RELATED_
 MOZ_BUILD_CHANGE_CNT=0
 if [ "x$MODIFIED_BUILD_RELATED_FILE_CNT" != "x0" ]; then
   echo_log "Regenerate build files"
-  ./mach python python/mozbuild/mozbuild/gn_processor.py \
+  ./mach python build/gn_processor.py \
       $SCRIPT_DIR/gn-configs/webrtc.json 2>&1| tee -a $LOOP_OUTPUT_LOG
 
   MOZ_BUILD_CHANGE_CNT=`hg status third_party/libwebrtc \
diff --git a/third_party/abseil-cpp/README.mozilla b/third_party/abseil-cpp/README.mozilla
index da25a75d7c98..8207fa7ae4b8 100644
--- a/third_party/abseil-cpp/README.mozilla
+++ b/third_party/abseil-cpp/README.mozilla
@@ -78,7 +78,7 @@ hg status -nu | xargs hg add
 
 
 # to regenerate moz.build files
-./mach python python/mozbuild/mozbuild/gn_processor.py \
+./mach python build/gn_processor.py \
   dom/media/webrtc/third_party_build/gn-configs/abseil.json
 hg status -nd | xargs hg rm
 hg status -nu | xargs hg add