diff --git a/linuxdoom-1.10/d_net.c b/linuxdoom-1.10/d_net.c
index 75b5436e1..4d674232c 100644
--- a/linuxdoom-1.10/d_net.c
+++ b/linuxdoom-1.10/d_net.c
@@ -102,7 +102,7 @@ unsigned NetbufferChecksum (void)
 
     c = 0x1234567;
 
-    // FIXME -endianess?
+    // FIXME -endianness?
 #ifdef NORMALUNIX
     return 0;			// byte order problems
 #endif
diff --git a/linuxdoom-1.10/doomdef.h b/linuxdoom-1.10/doomdef.h
index 185047760..65f4a0589 100644
--- a/linuxdoom-1.10/doomdef.h
+++ b/linuxdoom-1.10/doomdef.h
@@ -288,7 +288,7 @@ typedef enum
 // Fixed point.
 //#include "m_fixed.h"
 
-// Endianess handling.
+// Endianness handling.
 //#include "m_swap.h"
 
 
diff --git a/linuxdoom-1.10/m_swap.c b/linuxdoom-1.10/m_swap.c
index 1db93c86f..a12325279 100644
--- a/linuxdoom-1.10/m_swap.c
+++ b/linuxdoom-1.10/m_swap.c
@@ -17,7 +17,7 @@
 // $Log:$
 //
 // DESCRIPTION:
-//	Endianess handling, swapping 16bit and 32bit.
+//	Endianness handling, swapping 16bit and 32bit.
 //
 //-----------------------------------------------------------------------------
 
diff --git a/linuxdoom-1.10/m_swap.h b/linuxdoom-1.10/m_swap.h
index 86f6e0a14..00ea14c56 100644
--- a/linuxdoom-1.10/m_swap.h
+++ b/linuxdoom-1.10/m_swap.h
@@ -15,7 +15,7 @@
 // for more details.
 //
 // DESCRIPTION:
-//	Endianess handling, swapping 16bit and 32bit.
+//	Endianness handling, swapping 16bit and 32bit.
 //
 //-----------------------------------------------------------------------------
 
@@ -29,7 +29,7 @@
 #endif
 
 
-// Endianess handling.
+// Endianness handling.
 // WAD files are stored little endian.
 #ifdef __BIG_ENDIAN__
 short	SwapSHORT(short);
diff --git a/sndserv/wadread.c b/sndserv/wadread.c
index 4fd61a519..ccb0a1de5 100644
--- a/sndserv/wadread.c
+++ b/sndserv/wadread.c
@@ -92,7 +92,7 @@ void**		lumpcache;
 
 //
 // Something new.
-// This version of w_wad.c does handle endianess.
+// This version of w_wad.c does handle endianness.
 //
 #ifndef __BIG_ENDIAN__