diff --git a/.github/workflows/run-onert-micro-unit-tests.yml b/.github/workflows/run-onert-micro-unit-tests.yml
index 4c797651b71..c40548c639b 100644
--- a/.github/workflows/run-onert-micro-unit-tests.yml
+++ b/.github/workflows/run-onert-micro-unit-tests.yml
@@ -50,6 +50,13 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
           # Fetch all history and branch (default: 1)
           fetch-depth: 0
+      - name: Build for Cortex ARM
+        run: |
+          mkdir build_arm
+          cd build_arm
+          cmake ../infra/onert-micro/ -DCMAKE_BUILD_TYPE=Release -DNOT_BUILD_EXTERNALS=0
+          cmake --build . --target onert_micro_arm -j1
+
       - name: Build and Run Tests
         run: |
           mkdir build
diff --git a/onert-micro/onert-micro/src/core/memory/OMRuntimeAllocator.cpp b/onert-micro/onert-micro/src/core/memory/OMRuntimeAllocator.cpp
index 067ff93f0ac..3642cd60bcb 100644
--- a/onert-micro/onert-micro/src/core/memory/OMRuntimeAllocator.cpp
+++ b/onert-micro/onert-micro/src/core/memory/OMRuntimeAllocator.cpp
@@ -180,7 +180,7 @@ OMStatus OMRuntimeAllocator::allocateGraphInputs(OMRuntimeContext *context,
   OMStatus status = Ok;
   const auto &graph_inputs = context->getCircleInputs();
 
-  for (uint i = 0; i < graph_inputs->size(); ++i)
+  for (uint32_t i = 0; i < graph_inputs->size(); ++i)
   {
     auto tensor_index = graph_inputs->operator[](i);
     const circle::Tensor *tensor = context->getTensorByIndex(tensor_index);