diff --git a/src/m_swap.h b/src/m_swap.h
index 6e0bc88cc5..82751fd471 100644
--- a/src/m_swap.h
+++ b/src/m_swap.h
@@ -29,51 +29,51 @@
 // WAD files are stored little endian.
 
 #ifdef __APPLE__
-#include <CoreFoundation/CoreFoundation.h>
+#include <libkern/OSByteOrder.h>
 
 inline short LittleShort(short x)
 {
-	return (short)CFSwapInt16LittleToHost((uint16_t)x);
+	return (short)OSSwapLittleToHostInt16((uint16_t)x);
 }
 
 inline unsigned short LittleShort(unsigned short x)
 {
-	return CFSwapInt16LittleToHost(x);
+	return OSSwapLittleToHostInt16(x);
 }
 
 inline short LittleShort(int x)
 {
-	return CFSwapInt16LittleToHost((uint16_t)x);
+	return OSSwapLittleToHostInt16((uint16_t)x);
 }
 
 inline int LittleLong(int x)
 {
-	return CFSwapInt32LittleToHost((uint32_t)x);
+	return OSSwapLittleToHostInt32((uint32_t)x);
 }
 
 inline unsigned int LittleLong(unsigned int x)
 {
-	return CFSwapInt32LittleToHost(x);
+	return OSSwapLittleToHostInt32(x);
 }
 
 inline short BigShort(short x)
 {
-	return (short)CFSwapInt16BigToHost((uint16_t)x);
+	return (short)OSSwapBigToHostInt16((uint16_t)x);
 }
 
 inline unsigned short BigShort(unsigned short x)
 {
-	return CFSwapInt16BigToHost(x);
+	return OSSwapBigToHostInt16(x);
 }
 
 inline int BigLong(int x)
 {
-	return CFSwapInt32BigToHost((uint32_t)x);
+	return OSSwapBigToHostInt32((uint32_t)x);
 }
 
 inline unsigned int BigLong(unsigned int x)
 {
-	return CFSwapInt32BigToHost(x);
+	return OSSwapBigToHostInt32(x);
 }
 
 #else
diff --git a/src/sdl/i_main.cpp b/src/sdl/i_main.cpp
index 3c721ae510..27324edf6b 100644
--- a/src/sdl/i_main.cpp
+++ b/src/sdl/i_main.cpp
@@ -303,8 +303,8 @@ int main (int argc, char **argv)
 		vid_defwidth  = videoInfo->current_w;
 		vid_defheight = videoInfo->current_h;
 		vid_defbits   = videoInfo->vfmt->BitsPerPixel;
-		vid_vsync     = True;
-		fullscreen    = True;
+		vid_vsync     = true;
+		fullscreen    = true;
 	}
 	
 #endif // __APPLE__
diff --git a/src/sdl/i_system.cpp b/src/sdl/i_system.cpp
index f7137d1036..88850d9fe1 100644
--- a/src/sdl/i_system.cpp
+++ b/src/sdl/i_system.cpp
@@ -103,10 +103,8 @@ int (*I_GetTime) (bool saveMS);
 int (*I_WaitForTic) (int);
 void (*I_FreezeTime) (bool frozen);
 
-void I_Tactile (int on, int off, int total)
+void I_Tactile (int /*on*/, int /*off*/, int /*total*/)
 {
-    // UNUSED.
-    on = off = total = 0;
 }
 
 ticcmd_t emptycmd;
@@ -323,8 +321,8 @@ void SetLanguageIDs ()
 	size_t langlen = strlen(language);
 
 	DWORD lang = (langlen < 2 || langlen > 3) ?
-		MAKE_ID('e','n','u','0') :
-		MAKE_ID(language[0],language[1],language[2],'0');
+		MAKE_ID('e','n','u','\0') :
+		MAKE_ID(language[0],language[1],language[2],'\0');
 
 	LanguageIDs[3] = LanguageIDs[2] = LanguageIDs[1] = LanguageIDs[0] = lang;
 }
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index 9055f7b913..048d4d47ff 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -1340,14 +1340,11 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FireCustomMissile)
 		self->pitch -= pitch;
 		AActor * misl=P_SpawnPlayerMissile (self, x, y, z, ti, shootangle, &linetarget);
 		self->pitch = SavedPlayerPitch;
-		if (Flags & FPF_TRANSFERTRANSLATION)
-		{
-			misl->Translation = self->Translation;
-		}
 
 		// automatic handling of seeker missiles
 		if (misl)
 		{
+			if (Flags & FPF_TRANSFERTRANSLATION) misl->Translation = self->Translation;
 			if (linetarget && misl->flags2&MF2_SEEKERMISSILE) misl->tracer=linetarget;
 			if (!(Flags & FPF_AIMATANGLE))
 			{
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 3b61bedcab..81452c7b00 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -167,7 +167,7 @@ INTBOOL CheckActorFlag(const AActor *owner, FFlagDef *fd)
 	{
 		return fd->flagbit & *(DWORD *)(((char*)owner) + fd->structoffset);
 	}
-#ifdef __BID_ENDIAN__
+#ifdef __BIG_ENDIAN__
 	else if (fd->fieldsize == 2)
 	{
 		return fd->flagbit & *(WORD *)(((char*)owner) + fd->structoffset);