diff --git a/plugins/preprocess/preprocess_node.cpp b/plugins/preprocess/preprocess_node.cpp
index 19cea3f..047f0f3 100644
--- a/plugins/preprocess/preprocess_node.cpp
+++ b/plugins/preprocess/preprocess_node.cpp
@@ -431,7 +431,11 @@ private:
         auto Check = [&](const rga_buffer_t& s, const rga_buffer_t& d) -> bool {
             const im_rect sr{0, 0, s.width, s.height};
             const im_rect dr{0, 0, d.width, d.height};
-            const IM_STATUS chk = imcheck(s, d, sr, dr);
+            // Do NOT call the imcheck(...) variadic macro with 0 extra args:
+            // under -Wpedantic/-std=c++11 it expands to a zero-sized array.
+            rga_buffer_t pat{};
+            const im_rect pr{0, 0, 0, 0};
+            const IM_STATUS chk = imcheck_t(s, d, pat, sr, dr, pr, 0);
             if (chk != IM_STATUS_NOERROR && chk != IM_STATUS_SUCCESS) {
                 std::cerr << "[preprocess] RGA imcheck failed: " << imStrError(chk) << "\n";
                 return false;