diff --git a/src/core/hle/service/gsp.cpp b/src/core/hle/service/gsp.cpp
index 34b8535fb..5468b7c74 100644
--- a/src/core/hle/service/gsp.cpp
+++ b/src/core/hle/service/gsp.cpp
@@ -22,7 +22,9 @@
 GraphicsDebugger g_debugger;
 
 //Handle to irq memory
-Handle g_mem_irq;
+Handle g_mem_irq = 0;
+
+static const int irq_mem_size = 0x1000; //TODO(bravia): determine the correct size for this region
 
 
 /// GSP shared memory GX command buffer header
@@ -126,7 +128,7 @@ void RegisterInterruptRelayQueue(Service::Interface* self) {
     Kernel::SetPermanentLock(event_handle, true);
 
     cmd_buff[2] = g_thread_id;          // ThreadID
-    g_mem_irq = Kernel::CreateSharedMemory(0x1000); //page size for now
+    g_mem_irq = Kernel::CreateSharedMemory(irq_mem_size); //page size for now
     cmd_buff[4] = g_mem_irq;
 }
 
diff --git a/src/core/hle/service/hid.cpp b/src/core/hle/service/hid.cpp
index a92a9aa0a..d6673739a 100644
--- a/src/core/hle/service/hid.cpp
+++ b/src/core/hle/service/hid.cpp
@@ -13,7 +13,9 @@
 
 namespace HID_User {
 
-Handle g_mem_ipc = NULL;
+Handle g_mem_ipc = 0;
+
+static const int ipc_mem_size = 0x1000; //TODO(bravia): determine size of this region
 
 Handle GetMemIPCHandle() {
     return g_mem_ipc;
@@ -21,7 +23,7 @@ Handle GetMemIPCHandle() {
 
 void GetIPCHandles(Service::Interface* self) {
     u32* cmd_buff = Service::GetCommandBuffer();
-    g_mem_ipc = Kernel::CreateSharedMemory(0x1000); //page size for now
+    g_mem_ipc = Kernel::CreateSharedMemory(ipc_mem_size);
     cmd_buff[3] = g_mem_ipc;
 }
 
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp
index c8ef8dbf6..6829124fd 100644
--- a/src/core/mem_map_funcs.cpp
+++ b/src/core/mem_map_funcs.cpp
@@ -73,11 +73,10 @@ inline void _Read(T &var, const u32 addr) {
 
     // Shared memory
     } else if ((vaddr >= SHARED_MEMORY_VADDR)  && (vaddr < SHARED_MEMORY_VADDR_END)) {
-        for (std::map<u32, MemoryBlock>::iterator it = g_shared_map.begin(); it != g_shared_map.end(); it++) {
+        for (std::map<u32, MemoryBlock>::iterator it = g_shared_map.begin(); it != g_shared_map.end(); ++it) {
             MemoryBlock block = it->second;
             if ((vaddr >= block.base_address) && (vaddr < block.GetVirtualAddress())) {
-                Handle handle = block.handle;
-                Kernel::ReadSharedMemory<T>(handle, var, addr);
+                Kernel::ReadSharedMemory<T>(block.handle, var, addr);
                 return;
             }
         }
@@ -126,11 +125,10 @@ inline void _Write(u32 addr, const T data) {
 
     // Shared memory
     } else if ((vaddr >= SHARED_MEMORY_VADDR)  && (vaddr < SHARED_MEMORY_VADDR_END)) {
-        for (std::map<u32, MemoryBlock>::iterator it = g_shared_map.begin(); it != g_shared_map.end(); it++) {
+        for (std::map<u32, MemoryBlock>::iterator it = g_shared_map.begin(); it != g_shared_map.end(); ++it) {
             MemoryBlock block = it->second;
             if ((vaddr >= block.base_address) && (vaddr < block.base_address + block.size)) {
-                Handle handle = block.handle;
-                Kernel::WriteSharedMemory<T>(handle, data, addr);
+                Kernel::WriteSharedMemory<T>(block.handle, data, addr);
                 return;
             }
         }
diff --git a/src/video_core/video_core.cpp b/src/video_core/video_core.cpp
index b53555bf1..247ec6743 100644
--- a/src/video_core/video_core.cpp
+++ b/src/video_core/video_core.cpp
@@ -36,7 +36,8 @@ void Init(EmuWindow* emu_window) {
     glewExperimental = GL_TRUE;
 #endif
 #if EMU_PLATFORM == PLATFORM_WINDOWS
-    glewExperimental = GL_TRUE;
+    //Similar to OSX problem, windows requires glewExperimental to avoid runtime errors
+    glewExperimental = GL_TRUE;  
 #endif