diff --git a/src/uvw/emitter.hpp b/src/uvw/emitter.hpp
index 60f6b5e3..adb3ffa0 100644
--- a/src/uvw/emitter.hpp
+++ b/src/uvw/emitter.hpp
@@ -97,7 +97,7 @@ class Emitter {
         }
 
         Connection on(Listener f) {
-            return onL.emplace(onL.cbegin(), false, std::move(f));
+            return onL.emplace(onL.cend(), false, std::move(f));
         }
 
         void erase(Connection conn) noexcept {
@@ -139,7 +139,7 @@ class Emitter {
         return counter++;
     }
 
-    template<typename E>
+    template<typename>
     static std::size_t event_type() noexcept {
         static std::size_t value = next_type();
         return value;
diff --git a/src/uvw/process.hpp b/src/uvw/process.hpp
index 9299ab23..b6e0beef 100644
--- a/src/uvw/process.hpp
+++ b/src/uvw/process.hpp
@@ -146,9 +146,11 @@ public:
          * > The convention is that stdio[0] points to stdin, fd 1 is used
          * > for stdout, and fd 2 is stderr.
          */
-        std::vector<uv_stdio_container_t> poStdio{poFdStdio.size() + poStreamStdio.size()};
-        poStdio.insert(poStdio.begin(), poStreamStdio.cbegin(), poStreamStdio.cend());
-        poStdio.insert(poStdio.begin(), poFdStdio.cbegin(), poFdStdio.cend());
+        po.stdio_count = poStreamStdio.size() + poFdStdio.size();
+        uv_stdio_container_t stdio[po.stdio_count];
+        std::copy(poFdStdio.cbegin(), poFdStdio.cend(), stdio);
+        std::copy(poStreamStdio.cbegin(), poStreamStdio.cend(), stdio + poFdStdio.size());
+        po.stdio = stdio;
 
         invoke(&uv_spawn, parent(), get(), &po);
     }