diff --git a/build_openmw.bat b/build_openmw.bat
index 8d3575d54..05634fee9 100755
--- a/build_openmw.bat
+++ b/build_openmw.bat
@@ -8,4 +8,4 @@ g++ -c ogre\cpp_ogre.cpp -I.\includes\ogre\
 g++ -c bullet\cpp_bullet.cpp -I.\includes\bullet\
 
 echo Compiling main program (openmw.exe)
-gdc -Wall -g openmw.d bsa\*.d core\*.d esm\*.d input\*.d nif\*.d ogre\*.d scene\*.d sound\*.d util\*.d bullet\*.d cpp_ogre.o cpp_avcodec.o cpp_bullet.o libbulletdynamics.a libbulletcollision.a libbulletmath.a mscripts\object.d monster\compiler\*.d monster\vm\*.d monster\util\*.d avcodec-51.dll avformat-52.dll avdevice-52.dll avutil-49.dll openal32.dll ogremain_d.dll OIS_d.dll -lstdc++ -o openmw.exe
+gdc -g openmw.d bsa\*.d core\*.d esm\*.d input\*.d nif\*.d ogre\*.d scene\*.d sound\*.d util\*.d bullet\*.d cpp_ogre.o cpp_avcodec.o cpp_bullet.o libbulletdynamics.a libbulletcollision.a libbulletmath.a mscripts\object.d monster\monster.d monster\compiler\*.d monster\vm\*.d monster\util\*.d avcodec-51.dll avformat-52.dll avdevice-52.dll avutil-49.dll openal32.dll ogremain_d.dll OIS_d.dll -lstdc++ -o openmw.exe
diff --git a/mscripts/object.d b/mscripts/object.d
index 6e9ed2c3f..e9b08f065 100644
--- a/mscripts/object.d
+++ b/mscripts/object.d
@@ -85,13 +85,13 @@ class IdleSleep : IdleFunction
   bool initiate(MonsterObject *mo)
     {
       // Get the parameter
-      double secs = stack.popFloat;
+      float secs = stack.popFloat;
 
       // Get current time
       long newTime = getUTCtime();
 
       // Calculate when we should return
-      newTime += secs*TicksPerSecond;
+      newTime += cast(long)secs*TicksPerSecond;
 
       // Store it
       if(mo.extra == null) mo.extra = new long;