diff --git a/ChangeLog b/ChangeLog
index 7826741a5..c9bb88876 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-03-16  Manuel Guesdon <mguesdon@orange-concept.com>
+
+	* Tools/pl*.m: added #include <Foundation/Foundation.h> to avoid 
+		GNUSTEP Internal Error
+
 2001-03-14  Adam Fedor  <fedor@gnu.org>
 
 	* Source/libgnustep-base.def: Remove some classes that aren't
diff --git a/Tools/pldes.m b/Tools/pldes.m
index 25b118afb..5bed6f90b 100644
--- a/Tools/pldes.m
+++ b/Tools/pldes.m
@@ -19,6 +19,7 @@
    */
 
 #include "config.h"
+#include	<Foundation/Foundation.h>
 #include	<Foundation/NSArray.h>
 #include	<Foundation/NSData.h>
 #include	<Foundation/NSException.h>
diff --git a/Tools/plmerge.m b/Tools/plmerge.m
index 2b2af2b3b..a71206c29 100644
--- a/Tools/plmerge.m
+++ b/Tools/plmerge.m
@@ -18,6 +18,7 @@
 
    */
 
+#import	        <Foundation/Foundation.h>
 #import		<Foundation/NSArray.h>
 #import		<Foundation/NSAutoreleasePool.h>
 #import		<Foundation/NSData.h>
diff --git a/Tools/plparse.m b/Tools/plparse.m
index a759b758c..087a0b1a9 100644
--- a/Tools/plparse.m
+++ b/Tools/plparse.m
@@ -19,6 +19,7 @@
    */
 
 #include "config.h"
+#include	<Foundation/Foundation.h>
 #include	<Foundation/NSArray.h>
 #include	<Foundation/NSException.h>
 #include	<Foundation/NSString.h>
diff --git a/Tools/plser.m b/Tools/plser.m
index f0b923ae9..833be11f0 100644
--- a/Tools/plser.m
+++ b/Tools/plser.m
@@ -19,6 +19,7 @@
    */
 
 #include "config.h"
+#include	<Foundation/Foundation.h>
 #include	<Foundation/NSArray.h>
 #include	<Foundation/NSData.h>
 #include	<Foundation/NSException.h>