diff --git a/JGE/src/SDLmain.cpp b/JGE/src/SDLmain.cpp
index 6803ceb72..ec9732666 100644
--- a/JGE/src/SDLmain.cpp
+++ b/JGE/src/SDLmain.cpp
@@ -88,22 +88,22 @@ class SdlApp {
           if ((GLfloat)width / (GLfloat)height <= ACTUAL_RATIO)
           {
             viewPort.x = 0;
-            viewPort.y = -((width/ACTUAL_RATIO)-height)/2;
+            viewPort.y = -(static_cast<int>(width / ACTUAL_RATIO) - height) / 2;
             viewPort.w = width;
-            viewPort.h = width / ACTUAL_RATIO;
+            viewPort.h = static_cast<int>(width / ACTUAL_RATIO);
           }
           else
           {
-            viewPort.x = -(height*ACTUAL_RATIO-width)/2;
+            viewPort.x = -(static_cast<int>(height * ACTUAL_RATIO) - width) / 2;
             viewPort.y = 0;
-            viewPort.w = height * ACTUAL_RATIO;
+            viewPort.w = static_cast<int>(height * ACTUAL_RATIO);
             viewPort.h = height;
           }
 
           glViewport(viewPort.x, viewPort.y, viewPort.w, viewPort.h);
 
-          JRenderer::GetInstance()->SetActualWidth(viewPort.w);
-          JRenderer::GetInstance()->SetActualHeight(viewPort.h);
+          JRenderer::GetInstance()->SetActualWidth(static_cast<float>(viewPort.w));
+          JRenderer::GetInstance()->SetActualHeight(static_cast<float>(viewPort.h));
           glScissor(0, 0, width, height);
 
         #if (!defined GL_ES_VERSION_2_0) && (!defined GL_VERSION_2_0)
@@ -331,11 +331,10 @@ void DestroyGame(void)
   g_engine = NULL;
 }
 
-void SdlApp::OnUpdate() {
-  static int tickCount;
-  Uint32 dt;
-  tickCount = JGEGetTime();
-  dt = (tickCount - lastTickCount);
+void SdlApp::OnUpdate()
+{
+  static int tickCount = JGEGetTime();
+  int64_t dt = (tickCount - lastTickCount);
   lastTickCount = tickCount;
 
   if(g_engine->IsDone()) {
diff --git a/JGE/src/pc/JSfx.cpp b/JGE/src/pc/JSfx.cpp
index 38b4799a1..46f148d03 100644
--- a/JGE/src/pc/JSfx.cpp
+++ b/JGE/src/pc/JSfx.cpp
@@ -32,7 +32,7 @@ void JMusic::Update(){
 
 int JMusic::getPlayTime(){
 #ifdef WITH_FMOD
-  return FSOUND_GetCurrentPosition(JSoundSystem::GetInstance()->mChannel)/44.1; //todo more generic, here it's only 44kHz
+  return static_cast<int>(FSOUND_GetCurrentPosition(JSoundSystem::GetInstance()->mChannel) / 44.1); //todo more generic, here it's only 44kHz
 #else
   return 0;
 #endif
@@ -238,7 +238,7 @@ void JSoundSystem::SetVolume(int volume)
 void JSoundSystem::SetMusicVolume(int volume)
 {
 #ifdef WITH_FMOD
-  if (mChannel != FSOUND_FREE) FSOUND_SetVolumeAbsolute(mChannel,volume * 2.55);
+  if (mChannel != FSOUND_FREE) FSOUND_SetVolumeAbsolute(mChannel, static_cast<int>(volume * 2.55));
 #endif
   mVolume = volume;
 }
@@ -247,7 +247,7 @@ void JSoundSystem::SetSfxVolume(int volume){
   //this sets the volume to all channels then reverts back the volume for music..
   //that's a bit dirty but it works
 #ifdef WITH_FMOD
-  FSOUND_SetVolumeAbsolute(FSOUND_ALL, volume * 2.55);
+  FSOUND_SetVolumeAbsolute(FSOUND_ALL, static_cast<int>(volume * 2.55));
 #endif
   mSampleVolume = volume;
   SetMusicVolume(mVolume);
@@ -305,7 +305,7 @@ void JSoundSystem::PlaySample(JSample *sample)
 #ifdef WITH_FMOD
   if (sample && sample->mSample){
     int channel = FSOUND_PlaySound(FSOUND_FREE, sample->mSample);
-    FSOUND_SetVolumeAbsolute(channel,mSampleVolume * 2.55);
+    FSOUND_SetVolumeAbsolute(channel, static_cast<int>(mSampleVolume * 2.55));
   }
 #endif
 #endif
diff --git a/projects/mtg/include/utils.h b/projects/mtg/include/utils.h
index 71b3b3976..5d67ef3b6 100644
--- a/projects/mtg/include/utils.h
+++ b/projects/mtg/include/utils.h
@@ -126,7 +126,7 @@ u32 ramAvailable(void);
 
 #ifdef WIN32
 #include <direct.h>
-#define MAKEDIR(name) mkdir(name)
+#define MAKEDIR(name) _mkdir(name)
 #else
 #include <sys/stat.h>
 #define MAKEDIR(name) mkdir(name, 0777)