diff --git a/include/input/InputTransport.h b/include/input/InputTransport.h
index 609b679..8ffdfca 100644
--- a/include/input/InputTransport.h
+++ b/include/input/InputTransport.h
@@ -86,7 +86,7 @@
             float yOffset;
             float xPrecision;
             float yPrecision;
-            size_t pointerCount;
+            uint32_t pointerCount;
             struct Pointer {
                 PointerProperties properties;
                 PointerCoords coords;
@@ -234,7 +234,7 @@
             float yPrecision,
             nsecs_t downTime,
             nsecs_t eventTime,
-            size_t pointerCount,
+            uint32_t pointerCount,
             const PointerProperties* pointerProperties,
             const PointerCoords* pointerCoords);
 
@@ -360,7 +360,7 @@
         void initializeFrom(const InputMessage* msg) {
             eventTime = msg->body.motion.eventTime;
             idBits.clear();
-            for (size_t i = 0; i < msg->body.motion.pointerCount; i++) {
+            for (uint32_t i = 0; i < msg->body.motion.pointerCount; i++) {
                 uint32_t id = msg->body.motion.pointers[i].properties.id;
                 idBits.markBit(id);
                 idToIndex[id] = i;
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index 09b2e7c..2d0fb8c 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -292,7 +292,7 @@
         float yPrecision,
         nsecs_t downTime,
         nsecs_t eventTime,
-        size_t pointerCount,
+        uint32_t pointerCount,
         const PointerProperties* pointerProperties,
         const PointerCoords* pointerCoords) {
 #if DEBUG_TRANSPORT_ACTIONS
@@ -334,7 +334,7 @@
     msg.body.motion.downTime = downTime;
     msg.body.motion.eventTime = eventTime;
     msg.body.motion.pointerCount = pointerCount;
-    for (size_t i = 0; i < pointerCount; i++) {
+    for (uint32_t i = 0; i < pointerCount; i++) {
         msg.body.motion.pointers[i].properties.copyFrom(pointerProperties[i]);
         msg.body.motion.pointers[i].coords.copyFrom(pointerCoords[i]);
     }
@@ -654,7 +654,7 @@
 }
 
 void InputConsumer::rewriteMessage(const TouchState& state, InputMessage* msg) {
-    for (size_t i = 0; i < msg->body.motion.pointerCount; i++) {
+    for (uint32_t i = 0; i < msg->body.motion.pointerCount; i++) {
         uint32_t id = msg->body.motion.pointers[i].properties.id;
         if (state.lastResample.idBits.hasBit(id)) {
             PointerCoords& msgCoords = msg->body.motion.pointers[i].coords;
@@ -894,10 +894,10 @@
 }
 
 void InputConsumer::initializeMotionEvent(MotionEvent* event, const InputMessage* msg) {
-    size_t pointerCount = msg->body.motion.pointerCount;
+    uint32_t pointerCount = msg->body.motion.pointerCount;
     PointerProperties pointerProperties[pointerCount];
     PointerCoords pointerCoords[pointerCount];
-    for (size_t i = 0; i < pointerCount; i++) {
+    for (uint32_t i = 0; i < pointerCount; i++) {
         pointerProperties[i].copyFrom(msg->body.motion.pointers[i].properties);
         pointerCoords[i].copyFrom(msg->body.motion.pointers[i].coords);
     }
@@ -922,9 +922,9 @@
 }
 
 void InputConsumer::addSample(MotionEvent* event, const InputMessage* msg) {
-    size_t pointerCount = msg->body.motion.pointerCount;
+    uint32_t pointerCount = msg->body.motion.pointerCount;
     PointerCoords pointerCoords[pointerCount];
-    for (size_t i = 0; i < pointerCount; i++) {
+    for (uint32_t i = 0; i < pointerCount; i++) {
         pointerCoords[i].copyFrom(msg->body.motion.pointers[i].coords);
     }
 
@@ -934,7 +934,7 @@
 
 bool InputConsumer::canAddSample(const Batch& batch, const InputMessage *msg) {
     const InputMessage& head = batch.samples.itemAt(0);
-    size_t pointerCount = msg->body.motion.pointerCount;
+    uint32_t pointerCount = msg->body.motion.pointerCount;
     if (head.body.motion.pointerCount != pointerCount
             || head.body.motion.action != msg->body.motion.action) {
         return false;