diff --git a/libraries/entities/src/EntityItemProperties.cpp b/libraries/entities/src/EntityItemProperties.cpp
index e20bd81ab3..cb740a00f1 100644
--- a/libraries/entities/src/EntityItemProperties.cpp
+++ b/libraries/entities/src/EntityItemProperties.cpp
@@ -147,15 +147,15 @@ QString getCollisionGroupAsString(uint8_t group) {
 }
 
 uint8_t getCollisionGroupAsBitMask(const QStringRef& name) {
-    if (0 == name.compare("dynamic")) {
+    if (0 == name.compare(QString("dynamic"))) {
         return USER_COLLISION_GROUP_DYNAMIC;
-    } else if (0 == name.compare("static")) {
+    } else if (0 == name.compare(QString("static"))) {
         return USER_COLLISION_GROUP_STATIC;
-    } else if (0 == name.compare("kinematic")) {
+    } else if (0 == name.compare(QString("kinematic"))) {
         return USER_COLLISION_GROUP_KINEMATIC;
-    } else if (0 == name.compare("myAvatar")) {
+    } else if (0 == name.compare(QString("myAvatar"))) {
         return USER_COLLISION_GROUP_MY_AVATAR;
-    } else if (0 == name.compare("otherAvatar")) {
+    } else if (0 == name.compare(QString("otherAvatar"))) {
         return USER_COLLISION_GROUP_OTHER_AVATAR;
     }
     return 0;
diff --git a/libraries/shared/src/SharedUtil.cpp b/libraries/shared/src/SharedUtil.cpp
index 287c15e3a2..26483388e5 100644
--- a/libraries/shared/src/SharedUtil.cpp
+++ b/libraries/shared/src/SharedUtil.cpp
@@ -26,6 +26,15 @@
 #include <windows.h>
 #include "CPUIdent.h"
 #include <Psapi.h>
+
+#if _MSC_VER >= 1900
+#pragma comment(lib, "legacy_stdio_definitions.lib")
+FILE _iob[] = {*stdin, *stdout, *stderr};
+extern "C" FILE * __cdecl __iob_func(void) {
+    return _iob;
+}
+#endif
+
 #endif
 
 
diff --git a/tests/render-perf/src/main.cpp b/tests/render-perf/src/main.cpp
index e798969268..f52ba78724 100644
--- a/tests/render-perf/src/main.cpp
+++ b/tests/render-perf/src/main.cpp
@@ -1086,7 +1086,7 @@ private:
     QSize _size;
     QSettings _settings;
 
-    std::atomic<size_t> _renderCount;
+    std::atomic<size_t> _renderCount{ 0 };
     gl::OffscreenContext _initContext;
     RenderThread _renderThread;
     QWindowCamera _camera;
@@ -1152,3 +1152,4 @@ int main(int argc, char** argv) {
 }
 
 #include "main.moc"
+