diff --git a/src/SourceBuild/content/prep.sh b/src/SourceBuild/content/prep.sh
index cd77c0d0d..0219adafd 100755
--- a/src/SourceBuild/content/prep.sh
+++ b/src/SourceBuild/content/prep.sh
@@ -165,7 +165,7 @@ function BootstrapArtifacts {
   fi
 
   # Run restore on project to initiate download of bootstrap packages
-  "$DOTNET_SDK_PATH/dotnet" restore "$workingDir/buildBootstrapPreviouslySB.csproj" /bl:artifacts/log/bootstrap.binlog /fileLoggerParameters:LogFile=artifacts/log/bootstrap.log /p:ArchiveDir="$packagesArchiveDir" /p:BootstrapOverrideVersionsProps="$SCRIPT_ROOT/eng/bootstrap/OverrideBootstrapVersions.props"
+  "$DOTNET_SDK_PATH/dotnet" restore "$workingDir/buildBootstrapPreviouslySB.csproj" /bl:artifacts/log/prep-bootstrap.binlog /fileLoggerParameters:LogFile=artifacts/log/prep-bootstrap.log /p:ArchiveDir="$packagesArchiveDir" /p:BootstrapOverrideVersionsProps="$SCRIPT_ROOT/eng/bootstrap/OverrideBootstrapVersions.props"
 
   # Remove working directory
   rm -rf "$workingDir"