diff --git a/tools/patch_module.sh b/tools/patch_module.sh
index 4f89936..fb697ac 100755
--- a/tools/patch_module.sh
+++ b/tools/patch_module.sh
@@ -16,7 +16,7 @@
 # limitations under the License.
 #######################################################################################
 
-if [ $# -ne 3 ]; then
+if [ $# -ne 2 ]; then
     echo "Usage $0 <module> <tag_number>"
     echo "Example: $0 ro 2"
     echo "Example: $0 lcm 5"