diff --git a/scripts/vim-patch.sh b/scripts/vim-patch.sh
index 73cba243f7..a1b58c7c91 100755
--- a/scripts/vim-patch.sh
+++ b/scripts/vim-patch.sh
@@ -168,9 +168,16 @@ list_vim_patches() {
   local vim_tags=$(cd "${VIM_SOURCE_DIR}" && \
     git tag --contains v7.4.442)
 
-  # Get "runtime update" commits since e2719096.
-  local vim_runtime_commits=$(cd "${VIM_SOURCE_DIR}" && \
-    git log --format='%H' --grep='^patch' --grep='^updated for version' --invert-grep e2719096250a19ecdd9a35d13702879f163d2a50..HEAD)
+  # Get non-versioned commits since e2719096.
+  if git log -1 --grep='.' --invert-grep > /dev/null 2>&1 ; then
+    local vim_runtime_commits=$(cd "${VIM_SOURCE_DIR}" && \
+      git log --format='%H' --grep='^patch' --grep='^updated for version' --invert-grep e2719096250a19ecdd9a35d13702879f163d2a50..HEAD)
+  else
+    # --invert-grep requires git 2.4+
+    echo "Warning: some runtime updates may not be listed (requires git 2.4+)."
+    local vim_runtime_commits=$(cd "${VIM_SOURCE_DIR}" && \
+      git log --format='%H' --grep='Updated' e2719096250a19ecdd9a35d13702879f163d2a50..HEAD)
+  fi
 
   local vim_commit
   for vim_commit in ${vim_tags} ${vim_runtime_commits}; do