diff --git a/src/modules/Image/colortable.c b/src/modules/Image/colortable.c
index 5a5fa075009c17b0284bfc5c4aba771e0729a88f..3f86379d2457f40ac6c36a3421f2cf9ea860cab6 100644
--- a/src/modules/Image/colortable.c
+++ b/src/modules/Image/colortable.c
@@ -1,12 +1,12 @@
 #include "global.h"
 #include <config.h>
 
-/* $Id: colortable.c,v 1.50 1999/03/19 11:11:36 hubbe Exp $ */
+/* $Id: colortable.c,v 1.51 1999/03/19 18:21:47 mirar Exp $ */
 
 /*
 **! module Image
 **! note
-**!	$Id: colortable.c,v 1.50 1999/03/19 11:11:36 hubbe Exp $
+**!	$Id: colortable.c,v 1.51 1999/03/19 18:21:47 mirar Exp $
 **! class colortable
 **!
 **!	This object keeps colortable information,
@@ -21,7 +21,7 @@
 #undef COLORTABLE_DEBUG
 #undef COLORTABLE_REDUCE_DEBUG
 
-RCSID("$Id: colortable.c,v 1.50 1999/03/19 11:11:36 hubbe Exp $");
+RCSID("$Id: colortable.c,v 1.51 1999/03/19 18:21:47 mirar Exp $");
 
 #include <math.h> /* fabs() */
 
@@ -2233,7 +2233,7 @@ void image_colortable_reduce(INT32 args)
 void image_colortable_operator_plus(INT32 args)
 {
    struct object *o,*tmpo=NULL;
-   struct neo_colortable *dest,*src;
+   struct neo_colortable *dest,*src=NULL;
 
    int i;
 
@@ -2285,7 +2285,7 @@ void image_colortable_operator_plus(INT32 args)
 void image_colortable_operator_minus(INT32 args)
 {
    struct object *o;
-   struct neo_colortable *dest,*src;
+   struct neo_colortable *dest,*src=NULL;
 
    int i;
 
diff --git a/src/modules/Image/operator.c b/src/modules/Image/operator.c
index 9db9770465b6ecbc870ade65bd022e49176b556a..dde1959c92131818c29b3b47e6ffb871acda8f74 100644
--- a/src/modules/Image/operator.c
+++ b/src/modules/Image/operator.c
@@ -1,9 +1,9 @@
-/* $Id: operator.c,v 1.18 1998/05/07 18:42:15 mirar Exp $ */
+/* $Id: operator.c,v 1.19 1999/03/19 18:21:49 mirar Exp $ */
 
 /*
 **! module Image
 **! note
-**!	$Id: operator.c,v 1.18 1998/05/07 18:42:15 mirar Exp $
+**!	$Id: operator.c,v 1.19 1999/03/19 18:21:49 mirar Exp $
 **! class image
 */
 
@@ -39,7 +39,7 @@ extern struct program *image_program;
 
 #define STANDARD_OPERATOR_HEADER(what) \
    struct object *o;			   			\
-   struct image *img,*oper;		   			\
+   struct image *img,*oper=NULL;	   			\
    rgb_group *s1,*s2,*d;		   			\
    rgbl_group rgb;                                              \
    INT32 i;				   			\