diff --git a/src/toolsComm/antelope/defs.h b/src/toolsComm/antelope/defs.h
index 023af4898..9efe80ab4 100644
--- a/src/toolsComm/antelope/defs.h
+++ b/src/toolsComm/antelope/defs.h
@@ -197,13 +197,10 @@ extern char *header[];
 extern char *body[];
 extern char *trailer[];
 
-extern char *action_file_name;
 extern char *code_file_name;
 extern char *defines_file_name;
 extern char *input_file_name;
 extern char *output_file_name;
-extern char *text_file_name;
-extern char *union_file_name;
 extern char *verbose_file_name;
 
 extern FILE *action_file;
diff --git a/src/toolsComm/antelope/main.c b/src/toolsComm/antelope/main.c
index 8048355cb..05642f3bb 100644
--- a/src/toolsComm/antelope/main.c
+++ b/src/toolsComm/antelope/main.c
@@ -15,13 +15,10 @@ char *temp_form = "yacc.XXXXXXX";
 int lineno;
 int outline;
 
-char *action_file_name;
 char *code_file_name;
 char *defines_file_name;
 char *input_file_name = "";
 char *output_file_name;
-char *text_file_name;
-char *union_file_name;
 char *verbose_file_name;
 
 FILE *action_file;	/*  a temp file, used to save actions associated    */
@@ -64,9 +61,9 @@ extern char *getenv();
 done(k)
 int k;
 {
-    if (action_file) { fclose(action_file); unlink(action_file_name); }
-    if (text_file) { fclose(text_file); unlink(text_file_name); }
-    if (union_file) { fclose(union_file); unlink(union_file_name); }
+    if (action_file) { fclose(action_file); }
+    if (text_file) { fclose(text_file); }
+    if (union_file) { fclose(union_file); }
     exit(k);
 }
 
@@ -224,50 +221,13 @@ unsigned n;
 }
 
 
+/*
+ * joh - removed use TMPDIR variable by WIN32 here
+ */
 create_file_names()
 {
-    int i, len;
-    char *tmpdir;
-
-    tmpdir = getenv("TMPDIR");
-    if (tmpdir == 0) tmpdir = "/tmp";
-
-    len = strlen(tmpdir);
-    i = len + 13;
-    if (len && tmpdir[len-1] != '/')
-	++i;
-
-    action_file_name = MALLOC(i);
-    if (action_file_name == 0) no_space();
-    text_file_name = MALLOC(i);
-    if (text_file_name == 0) no_space();
-    union_file_name = MALLOC(i);
-    if (union_file_name == 0) no_space();
-
-    strcpy(action_file_name, tmpdir);
-    strcpy(text_file_name, tmpdir);
-    strcpy(union_file_name, tmpdir);
-
-    if (len && tmpdir[len - 1] != '/')
-    {
-	action_file_name[len] = '/';
-	text_file_name[len] = '/';
-	union_file_name[len] = '/';
-	++len;
-    }
-
-    strcpy(action_file_name + len, temp_form);
-    strcpy(text_file_name + len, temp_form);
-    strcpy(union_file_name + len, temp_form);
-
-    action_file_name[len + 5] = 'a';
-    text_file_name[len + 5] = 't';
-    union_file_name[len + 5] = 'u';
-
-    mktemp(action_file_name);
-    mktemp(text_file_name);
-    mktemp(union_file_name);
-
+    int len;
+ 
     len = strlen(file_prefix);
 
     output_file_name = MALLOC(len + 7);
@@ -318,13 +278,13 @@ open_files()
 	    open_error(input_file_name);
     }
 
-    action_file = fopen(action_file_name, "w");
+    action_file = tmpfile();
     if (action_file == 0)
-	open_error(action_file_name);
+	open_error("temp action file");
 
-    text_file = fopen(text_file_name, "w");
+    text_file = tmpfile();
     if (text_file == 0)
-	open_error(text_file_name);
+	open_error("temp text file");
 
     if (vflag)
     {
@@ -338,9 +298,9 @@ open_files()
 	defines_file = fopen(defines_file_name, "w");
 	if (defines_file == 0)
 	    open_error(defines_file_name);
-	union_file = fopen(union_file_name, "w");
+	union_file = tmpfile();
 	if (union_file ==  0)
-	    open_error(union_file_name);
+	    open_error("temp union file");
     }
 
     output_file = fopen(output_file_name, "w");
diff --git a/src/toolsComm/antelope/output.c b/src/toolsComm/antelope/output.c
index 07c434ccf..1e1f4af70 100644
--- a/src/toolsComm/antelope/output.c
+++ b/src/toolsComm/antelope/output.c
@@ -815,9 +815,7 @@ output_defines()
 
     if (dflag && unionized)
     {
-	fclose(union_file);
-	union_file = fopen(union_file_name, "r");
-	if (union_file == NULL) open_error(union_file_name);
+	rewind(union_file);
 	while ((c = getc(union_file)) != EOF)
 	    putc(c, defines_file);
 	fprintf(defines_file, " YYSTYPE;\nstatic YYSTYPE %slval;\n",
@@ -831,10 +829,7 @@ output_stored_text()
     register int c;
     register FILE *in, *out;
 
-    fclose(text_file);
-    text_file = fopen(text_file_name, "r");
-    if (text_file == NULL)
-	open_error(text_file_name);
+    rewind(text_file);
     in = text_file;
     if ((c = getc(in)) == EOF)
 	return(0);
@@ -1143,10 +1138,7 @@ output_semantic_actions()
     register int c, last;
     register FILE *out;
 
-    fclose(action_file);
-    action_file = fopen(action_file_name, "r");
-    if (action_file == NULL)
-	open_error(action_file_name);
+    rewind(action_file);
 
     if ((c = getc(action_file)) == EOF)
 	return(0);