diff --git a/ChangeLog b/ChangeLog
index 2ea42ffd4..ed7bbbc00 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 2008-11-04 Holger Vogt
  * /doc/version.texi committed again
  * /visualc/include/config.h: version no. 18
+ * /frontend/com_ftt: tfree, copyright notice
 
 2008-11-22 Lionel Sainte Cluque
  * COPYING: license clarifications
diff --git a/doc/version.texi b/doc/version.texi
new file mode 100644
index 000000000..83d100aab
--- /dev/null
+++ b/doc/version.texi
@@ -0,0 +1,4 @@
+@set UPDATED 01 December 2008
+@set UPDATED-MONTH December 2008
+@set EDITION 18
+@set VERSION 18
diff --git a/src/frontend/com_fft.c b/src/frontend/com_fft.c
index 26785fc48..682798976 100644
--- a/src/frontend/com_fft.c
+++ b/src/frontend/com_fft.c
@@ -235,8 +235,8 @@ com_fft(wordlist *wl)
         }    		
     }
         
-    free(reald);
-    free(imagd);
+    tfree(reald);
+    tfree(imagd);
     
     tfree(tdvec);
     tfree(fdvec);    
@@ -249,6 +249,7 @@ static void fftext(float* x, float* y, long int n, int dir)
 /*
    http://local.wasp.uwa.edu.au/~pbourke/other/dft/
    download 22.05.08
+   Used with permission from the author Paul Bourke
 */   
 
 /*