diff --git a/gnattools/ChangeLog b/gnattools/ChangeLog
index 2c885d8ec4d..ad836eaeb29 100644
--- a/gnattools/ChangeLog
+++ b/gnattools/ChangeLog
@@ -1,3 +1,11 @@
+2007-12-05  Bechir Zalila  <bechir.zalila@gmail.com>
+
+	PR ada/34284
+	* configure.ac: Added a missing switch case for *86-*-darwin*
+	when defining the value of TOOLS_TARGET_PAIRS.
+
+	* configure: Regenerated.
+
 2007-06-06  Arnaud Charlet  <charlet@adacore.com>
 
 	* configure.ac: Update TOOLS_TARGET_PAIRS configuration to match
diff --git a/gnattools/configure b/gnattools/configure
index 9e9e7a497ce..30a9085b63d 100755
--- a/gnattools/configure
+++ b/gnattools/configure
@@ -1667,7 +1667,7 @@ case "${target}" in
     indepsw.adb<indepsw-mingw.adb"
     EXTRA_GNATTOOLS='../../gnatdll$(exeext)'
     ;;
-  powerpc-*-darwin*)
+  powerpc-*-darwin* | *86-*-darwin*)
     TOOLS_TARGET_PAIRS="mlib-tgt-specific.adb<mlib-tgt-darwin.adb"
     ;;
   *-*-lynxos)
diff --git a/gnattools/configure.ac b/gnattools/configure.ac
index 6445fd06a2e..25de22553c8 100644
--- a/gnattools/configure.ac
+++ b/gnattools/configure.ac
@@ -150,7 +150,7 @@ case "${target}" in
     indepsw.adb<indepsw-mingw.adb"
     EXTRA_GNATTOOLS='../../gnatdll$(exeext)'
     ;;
-  powerpc-*-darwin*)
+  powerpc-*-darwin* | *86-*-darwin*)
     TOOLS_TARGET_PAIRS="mlib-tgt-specific.adb<mlib-tgt-darwin.adb"
     ;;
   *-*-lynxos)