diff --git a/src/gl/data/gl_setup.cpp b/src/gl/data/gl_setup.cpp
index 342f58fa1fb..a76e618d9ab 100644
--- a/src/gl/data/gl_setup.cpp
+++ b/src/gl/data/gl_setup.cpp
@@ -312,13 +312,11 @@ static void PrepareTransparentDoors(sector_t * sector)
 	int i;
 	sector_t * nextsec=NULL;
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (sector-sectors==2)
 	{
-		__asm nop
+		int a = 0;
 	}
-#endif
 #endif
 
 	P_Recalculate3DFloors(sector);
diff --git a/src/gl/scene/gl_bsp.cpp b/src/gl/scene/gl_bsp.cpp
index b8a1eeec02c..5bdb99b880d 100644
--- a/src/gl/scene/gl_bsp.cpp
+++ b/src/gl/scene/gl_bsp.cpp
@@ -96,11 +96,11 @@ static sector_t *currentsector;
 
 static void AddLine (seg_t *seg)
 {
-#ifdef _MSC_VER
 #ifdef _DEBUG
-	if (seg->linedef-lines==38)
-		__asm nop
-#endif
+	if (seg->linedef - lines == 38)
+	{
+		int a = 0;
+	}
 #endif
 
 	angle_t startAngle, endAngle;
@@ -382,13 +382,11 @@ static void DoSubsector(subsector_t * sub)
 	//if (!clipper.CheckBox(sub->bbox)) return;
 
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (sub->sector-sectors==931)
 	{
-		__asm nop
+		int a = 0;
 	}
-#endif
 #endif
 
 	sector=sub->sector;
diff --git a/src/gl/scene/gl_fakeflat.cpp b/src/gl/scene/gl_fakeflat.cpp
index 122bae0e639..d46449ddb9a 100644
--- a/src/gl/scene/gl_fakeflat.cpp
+++ b/src/gl/scene/gl_fakeflat.cpp
@@ -218,13 +218,11 @@ sector_t * gl_FakeFlat(sector_t * sec, sector_t * dest, area_t in_area, bool bac
 		return sec;
 	}
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (sec-sectors==560)
 	{
-		__asm nop
+		int a = 0;
 	}
-#endif
 #endif
 
 	if (in_area==area_above)
diff --git a/src/gl/scene/gl_flats.cpp b/src/gl/scene/gl_flats.cpp
index 441c8b73f1e..3efdcba8bb3 100644
--- a/src/gl/scene/gl_flats.cpp
+++ b/src/gl/scene/gl_flats.cpp
@@ -334,11 +334,11 @@ void GLFlat::Draw(int pass)
 	int i;
 	int rel = getExtraLight();
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (sector->sectornum == 2)
-		__asm nop
-#endif
+	{
+		int a = 0;
+	}
 #endif
 
 
@@ -572,17 +572,11 @@ void GLFlat::ProcessSector(sector_t * frontsector)
 {
 	lightlist_t * light;
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
-	if (frontsector==NULL)
-	{
-		__asm int 3
-	}
 	if (frontsector->sectornum==0)
 	{
-		__asm nop
+		int a = 0;
 	}
-#endif
 #endif
 
 	// Get the real sector for this one.
diff --git a/src/gl/scene/gl_walls.cpp b/src/gl/scene/gl_walls.cpp
index 6c8b327668b..c65e1aa3bef 100644
--- a/src/gl/scene/gl_walls.cpp
+++ b/src/gl/scene/gl_walls.cpp
@@ -311,11 +311,11 @@ void GLWall::SplitWall(sector_t * frontsector, bool translucent)
 	}
 	::SplitWall.Clock();
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (seg->linedef-lines==1)
-		__asm nop
-#endif
+	{
+		int a = 0;
+	}
 #endif
 
 	if (lightlist.Size()>1)
@@ -1445,11 +1445,11 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 	sector_t * realfront;
 	sector_t * realback;
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (seg->linedef-lines==636)
-		__asm nop
-#endif
+	{
+		int a = 0;
+	}
 #endif
 		
 	// note: we always have a valid sidedef and linedef reference when getting here.
diff --git a/src/gl/scene/gl_walls_draw.cpp b/src/gl/scene/gl_walls_draw.cpp
index d9747502954..c71e23a20cf 100644
--- a/src/gl/scene/gl_walls_draw.cpp
+++ b/src/gl/scene/gl_walls_draw.cpp
@@ -459,11 +459,11 @@ void GLWall::Draw(int pass)
 	FLightNode * node;
 	int rel;
 
-#ifdef _MSC_VER
 #ifdef _DEBUG
 	if (seg->linedef-lines==879)
-		__asm nop
-#endif
+	{
+		int a = 0;
+	}
 #endif