diff --git a/src/connection.cc b/src/connection.cc
index 1fce9b89..1fa92126 100644
--- a/src/connection.cc
+++ b/src/connection.cc
@@ -113,7 +113,7 @@ void IBConnection::flush() {
                   ErrorCode::InternalError);
     }
     for (int i = 0; i < wcNum; ++i) {
-      const struct ibv_wc* wc = reinterpret_cast<const struct ibv_wc*>(qp->getWc(i));
+      const ibv_wc* wc = qp->getWc(i);
       if (wc->status != IBV_WC_SUCCESS) {
         throw mscclpp::IbError("pollCq failed: status " + std::to_string(wc->status), wc->status);
       }
diff --git a/src/ib.cc b/src/ib.cc
index ccccbfc3..f53c93c9 100644
--- a/src/ib.cc
+++ b/src/ib.cc
@@ -247,7 +247,7 @@ int IbQp::pollCq() { return ibv_poll_cq(this->cq, MSCCLPP_IB_CQ_POLL_NUM, this->
 
 IbQpInfo& IbQp::getInfo() { return this->info; }
 
-const void* IbQp::getWc(int idx) const { return &this->wcs[idx]; }
+const ibv_wc* IbQp::getWc(int idx) const { return &this->wcs[idx]; }
 
 IbCtx::IbCtx(const std::string& devName) : devName(devName) {
   int num;
diff --git a/src/include/ib.hpp b/src/include/ib.hpp
index 6bf86218..6699f432 100644
--- a/src/include/ib.hpp
+++ b/src/include/ib.hpp
@@ -72,7 +72,7 @@ class IbQp {
   int pollCq();
 
   IbQpInfo& getInfo();
-  const void* getWc(int idx) const;
+  const ibv_wc* getWc(int idx) const;
 
  private:
   IbQp(ibv_context* ctx, ibv_pd* pd, int port);
diff --git a/test/ib_test.cc b/test/ib_test.cc
index 753d6fa4..d14586b6 100644
--- a/test/ib_test.cc
+++ b/test/ib_test.cc
@@ -79,7 +79,7 @@ int main(int argc, const char* argv[])
           return 1;
         }
         for (int i = 0; i < wcNum; ++i) {
-          const struct ibv_wc* wc = reinterpret_cast<const struct ibv_wc*>(qp->getWc(i));
+          const ibv_wc* wc = qp->getWc(i);
           if (wc->status != IBV_WC_SUCCESS) {
             WARN("wc status %d", wc->status);
             return 1;