diff --git a/efunc.h b/efunc.h
index dbccde8..44c54e9 100644
--- a/efunc.h
+++ b/efunc.h
@@ -161,7 +161,7 @@ extern int killregion(int f, int n);
 extern int copyregion(int f, int n);
 extern int lowerregion(int f, int n);
 extern int upperregion(int f, int n);
-extern int getregion(REGION *rp);
+extern int getregion(struct region *rp);
 
 /* posix.c */
 extern void ttopen(void);
diff --git a/estruct.h b/estruct.h
index dfffe0b..616c4c6 100644
--- a/estruct.h
+++ b/estruct.h
@@ -509,11 +509,11 @@ struct buffer {
  * The starting position of a region, and the size of the region in
  * characters, is kept in a region structure.  Used by the region commands.
  */
-typedef struct {
+struct region {
 	struct line *r_linep;	/* Origin struct line address.         */
 	short r_offset;		/* Origin struct line offset.          */
 	long r_size;		/* Length in characters.        */
-} REGION;
+};
 
 /*
  * All text is kept in circularly linked lists of "struct line" structures. These
diff --git a/region.c b/region.c
index 9a97cd4..22193ae 100644
--- a/region.c
+++ b/region.c
@@ -1,4 +1,4 @@
-/*	REGION.C
+/*	region.c
  *
  * The routines in this file
  * deal with the region, that magic space
@@ -23,7 +23,7 @@
 int killregion(int f, int n)
 {
 	int s;
-	REGION region;
+	struct region region;
 
 	if (curbp->b_mode & MDVIEW)	/* don't allow this command if      */
 		return (rdonly());	/* we are in read only mode     */
@@ -48,7 +48,7 @@ int copyregion(int f, int n)
 	struct line *linep;
 	int loffs;
 	int s;
-	REGION region;
+	struct region region;
 
 	if ((s = getregion(&region)) != TRUE)
 		return (s);
@@ -87,7 +87,7 @@ int lowerregion(int f, int n)
 	int loffs;
 	int c;
 	int s;
-	REGION region;
+	struct region region;
 
 	if (curbp->b_mode & MDVIEW)	/* don't allow this command if      */
 		return (rdonly());	/* we are in read only mode     */
@@ -124,7 +124,7 @@ int upperregion(int f, int n)
 	int loffs;
 	int c;
 	int s;
-	REGION region;
+	struct region region;
 
 	if (curbp->b_mode & MDVIEW)	/* don't allow this command if      */
 		return (rdonly());	/* we are in read only mode     */
@@ -150,7 +150,7 @@ int upperregion(int f, int n)
 /*
  * This routine figures out the
  * bounds of the region in the current window, and
- * fills in the fields of the "REGION" structure pointed
+ * fills in the fields of the "struct region" structure pointed
  * to by "rp". Because the dot and mark are usually very
  * close together, we scan outward from dot looking for
  * mark. This should save time. Return a standard code.
@@ -158,7 +158,7 @@ int upperregion(int f, int n)
  * an "ABORT" status; we might make this have the
  * conform thing later.
  */
-int getregion(REGION *rp)
+int getregion(struct region *rp)
 {
 	struct line *flp;
 	struct line *blp;
diff --git a/word.c b/word.c
index 4bd8739..119e4ac 100644
--- a/word.c
+++ b/word.c
@@ -651,7 +651,7 @@ int wordcount(int f, int n)
 	int nlines;		/* total number of lines in region */
 	int avgch;		/* average number of chars/word */
 	int status;		/* status return code */
-	REGION region;		/* region to look at */
+	struct region region;		/* region to look at */
 
 	/* make sure we have a region to count */
 	if ((status = getregion(&region)) != TRUE)