diff --git a/build/workspaces/update-workspaces.sh b/build/workspaces/update-workspaces.sh
index 6487120b7c..71706bcd43 100644
--- a/build/workspaces/update-workspaces.sh
+++ b/build/workspaces/update-workspaces.sh
@@ -41,7 +41,7 @@ premake_args=""
 with_system_premake5=false
 without_nvtt=false
 with_system_nvtt=false
-with_system_mozjs45=false
+with_system_mozjs52=false
 enable_atlas=true
 
 for i in "$@"
@@ -50,7 +50,7 @@ do
     --with-system-premake5 ) with_system_premake5=true ;;
     --without-nvtt ) without_nvtt=true; premake_args="${premake_args} --without-nvtt" ;;
     --with-system-nvtt ) with_system_nvtt=true; premake_args="${premake_args} --with-system-nvtt" ;;
-    --with-system-mozjs45 ) with_system_mozjs45=true; premake_args="${premake_args} --with-system-mozjs45" ;;
+    --with-system-mozjs52 ) with_system_mozjs52=true; premake_args="${premake_args} --with-system-mozjs52" ;;
     --enable-atlas ) enable_atlas=true ;;
     --disable-atlas ) enable_atlas=false ;;
     -j* ) JOBS=$i ;;
@@ -87,7 +87,7 @@ if [ "`uname -s`" != "Darwin" ]; then
   # Build/update bundled external libraries
   (cd ../../libraries/source/fcollada/src && ${MAKE} ${JOBS}) || die "FCollada build failed"
   echo
-  if [ "$with_system_mozjs45" = "false" ]; then
+  if [ "$with_system_mozjs52" = "false" ]; then
     (cd ../../libraries/source/spidermonkey && MAKE=${MAKE} JOBS=${JOBS} ./build.sh) || die "SpiderMonkey build failed"
   fi
   echo