diff --git a/src/osx/Installer.Mac/scripts/postinstall b/src/osx/Installer.Mac/scripts/postinstall
index 86922a7a5..cb73b07db 100755
--- a/src/osx/Installer.Mac/scripts/postinstall
+++ b/src/osx/Installer.Mac/scripts/postinstall
@@ -30,7 +30,8 @@ fi
 mkdir -p /usr/local/bin
 /bin/ln -Fs "$INSTALL_DESTINATION/git-credential-manager-core" /usr/local/bin/git-credential-manager-core
 
-# Configure GCM for the current user
-"$INSTALL_DESTINATION/git-credential-manager-core" configure
+# Configure GCM for the current user (running as the current user to avoid root
+# from taking ownership of ~/.gitconfig)
+sudo -u ${USER} "$INSTALL_DESTINATION/git-credential-manager-core" configure
 
 exit 0
diff --git a/src/osx/Installer.Mac/uninstall.sh b/src/osx/Installer.Mac/uninstall.sh
index 2657046d0..989ed9956 100755
--- a/src/osx/Installer.Mac/uninstall.sh
+++ b/src/osx/Installer.Mac/uninstall.sh
@@ -10,9 +10,9 @@ then
 	exit $?
 fi
 
-# Unconfigure
+# Unconfigure (as the current user)
 echo "Unconfiguring credential helper..."
-"$GCMBIN" unconfigure
+sudo -u `/usr/bin/logname` "$GCMBIN" unconfigure
 
 # Remove symlink
 if [ -L /usr/local/bin/git-credential-manager-core ]